3942656136 has 96 divisors (see below), whose sum is σ = 11501867520. Its totient is φ = 1216512000.

The previous prime is 3942656119. The next prime is 3942656149. The reversal of 3942656136 is 6316562493.

3942656136 is a `hidden beast` number, since 3 + 9 + 4 + 26 + 5 + 613 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3942656091 and 3942656100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12936 + ... + 89736.

It is an arithmetic number, because the mean of its divisors is an integer number (119811120).

Almost surely, 2^3942656136 is an apocalyptic number.

3942656136 is a gapful number since it is divisible by the number (36) 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 3942656136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5750933760).

3942656136 is an abundant number, since it is smaller than the sum of its proper divisors (7559211384).

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

3942656136 is a wasteful number, since it uses less digits than its factorization.

3942656136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76867 (or 76860 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 3942656136 is about 62790.5736237534. The cubic root of 3942656136 is about 1579.7788688017.

The spelling of 3942656136 in words is "three billion, nine hundred forty-two million, six hundred fifty-six thousand, one hundred thirty-six".