3156947136 has 336 divisors, whose sum is σ = 10970459136. Its totient is φ = 881362944.

The previous prime is 3156947113. The next prime is 3156947149. The reversal of 3156947136 is 6317496513.

It is a happy number.

3156947136 is a `hidden beast` number, since 31 + 569 + 47 + 13 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a junction number, because it is equal to n+sod(n) for n = 3156947091 and 3156947100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5116300 + ... + 5116916.

It is an arithmetic number, because the mean of its divisors is an integer number (32650176).

Almost surely, 2^3156947136 is an apocalyptic number.

3156947136 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 3156947136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5485229568).

3156947136 is an abundant number, since it is smaller than the sum of its proper divisors (7813512000).

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

3156947136 is an equidigital number, since it uses as much as digits as its factorization.

3156947136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 676 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 3156947136 is about 56186.7167220154. The cubic root of 3156947136 is about 1466.9740670639.

The spelling of 3156947136 in words is "three billion, one hundred fifty-six million, nine hundred forty-seven thousand, one hundred thirty-six".