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1996813915 = 51792231077
BaseRepresentation
bin111011100000100…
…1111011001011011
312011011100122201221
41313001033121123
513042141021130
6530050352511
7100324431625
oct16701173133
95134318657
101996813915
11935170938
1247888b737
1325a9000c5
1414d2a9c15
15ba48387a
hex7704f65b

1996813915 has 8 divisors (see below), whose sum is σ = 2409564240. Its totient is φ = 1588526112.

The previous prime is 1996813913. The next prime is 1996813981. The reversal of 1996813915 is 5193186991.

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

It is a cyclic number.

It is not a de Polignac number, because 1996813915 - 21 = 1996813913 is a prime.

It is a super-2 number, since 2×19968139152 = 7974531622275254450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1996813913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114644 + ... + 1116433.

It is an arithmetic number, because the mean of its divisors is an integer number (301195530).

Almost surely, 21996813915 is an apocalyptic number.

1996813915 is a deficient number, since it is larger than the sum of its proper divisors (412750325).

1996813915 is a wasteful number, since it uses less digits than its factorization.

1996813915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231261.

The product of its digits is 524880, while the sum is 52.

The square root of 1996813915 is about 44685.7238388280. The cubic root of 1996813915 is about 1259.2516583862.

The spelling of 1996813915 in words is "one billion, nine hundred ninety-six million, eight hundred thirteen thousand, nine hundred fifteen".

Divisors: 1 5 179 895 2231077 11155385 399362783 1996813915