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1980992470 = 25198099247
BaseRepresentation
bin111011000010011…
…1000101111010110
312010001120211210111
41312010320233112
513024113224340
6524323313234
7100043105152
oct16604705726
95101524714
101980992470
11927244a66
1247351b81a
132575508c2
1414b14c062
15b8daaaea
hex76138bd6

1980992470 has 8 divisors (see below), whose sum is σ = 3565786464. Its totient is φ = 792396984.

The previous prime is 1980992467. The next prime is 1980992483. The reversal of 1980992470 is 742990891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99049614 + ... + 99049633.

It is an arithmetic number, because the mean of its divisors is an integer number (445723308).

Almost surely, 21980992470 is an apocalyptic number.

1980992470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980992470 is a deficient number, since it is larger than the sum of its proper divisors (1584793994).

1980992470 is a wasteful number, since it uses less digits than its factorization.

1980992470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198099254.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1980992470 is about 44508.3415777312. The cubic root of 1980992470 is about 1255.9170072923.

The spelling of 1980992470 in words is "one billion, nine hundred eighty million, nine hundred ninety-two thousand, four hundred seventy".

Divisors: 1 2 5 10 198099247 396198494 990496235 1980992470