3931156992 has 160 divisors (see below), whose sum is σ = 12064656384. Its totient is φ = 1114214400.

The previous prime is 3931156979. The next prime is 3931156997. The reversal of 3931156992 is 2996511393.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (3931156997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1407117 + ... + 1409907.

Almost surely, 2^3931156992 is an apocalyptic number.

3931156992 is a gapful number since it is divisible by the number (32) 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 3931156992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6032328192).

3931156992 is an abundant number, since it is smaller than the sum of its proper divisors (8133499392).

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

3931156992 is a wasteful number, since it uses less digits than its factorization.

3931156992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2934 counting only the distinct ones).

The product of its digits is 393660, while the sum is 48.

The square root of 3931156992 is about 62698.9393211719. The cubic root of 3931156992 is about 1578.2415131188.

The spelling of 3931156992 in words is "three billion, nine hundred thirty-one million, one hundred fifty-six thousand, nine hundred ninety-two".