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1992913076520 = 23325131227186161
BaseRepresentation
bin11101000000000010111…
…000000100000100101000
321001112001112112211120200
4131000002320010010220
5230122441221422040
64123310455352200
7263661146435412
oct35000270040450
97045045484520
101992913076520
116a920a527333
122822a6682660
13115c14245922
146c6595879b2
1536c90c43630
hex1d002e04128

1992913076520 has 192 divisors, whose sum is σ = 6555195915840. Its totient is φ = 525060556800.

The previous prime is 1992913076509. The next prime is 1992913076543. The reversal of 1992913076520 is 256703192991.

1992913076520 is a `hidden beast` number, since 1 + 99 + 29 + 1 + 3 + 0 + 7 + 6 + 520 = 666.

It is a super-2 number, since 2×19929130765202 (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10612240 + ... + 10798400.

It is an arithmetic number, because the mean of its divisors is an integer number (34141645395).

Almost surely, 21992913076520 is an apocalyptic number.

1992913076520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992913076520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3277597957920).

1992913076520 is an abundant number, since it is smaller than the sum of its proper divisors (4562282839320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1992913076520 is a wasteful number, since it uses less digits than its factorization.

1992913076520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186536 (or 186529 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 1992913076520 in words is "one trillion, nine hundred ninety-two billion, nine hundred thirteen million, seventy-six thousand, five hundred twenty".