3656940136 has 32 divisors (see below), whose sum is σ = 7098273000. Its totient is φ = 1764157696.

The previous prime is 3656940113. The next prime is 3656940173. The reversal of 3656940136 is 6310496563.

It can be written as a sum of positive squares in 4 ways, for example, as 3241024900 + 415915236 = 56930^2 + 20394^2 .

It is a super-2 number, since 2×3656940136² = 26746422316575396992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3656940092 and 3656940101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374970 + ... + 384598.

Almost surely, 2^3656940136 is an apocalyptic number.

It is an amenable number.

3656940136 is a deficient number, since it is larger than the sum of its proper divisors (3441332864).

3656940136 is a wasteful number, since it uses less digits than its factorization.

3656940136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11301 (or 11297 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 3656940136 is about 60472.6395653439. The cubic root of 3656940136 is about 1540.6569603838.

The spelling of 3656940136 in words is "three billion, six hundred fifty-six million, nine hundred forty thousand, one hundred thirty-six".