3912738831 has 8 divisors (see below), whose sum is σ = 5796650160. Its totient is φ = 2608492536.

The previous prime is 3912738827. The next prime is 3912738839. The reversal of 3912738831 is 1388372193.

It is a happy number.

It is not a de Polignac number, because 3912738831 - 2² = 3912738827 is a prime.

It is a super-2 number, since 2×3912738831² = 30619050319230493122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912738839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72458100 + ... + 72458153.

It is an arithmetic number, because the mean of its divisors is an integer number (724581270).

Almost surely, 2^3912738831 is an apocalyptic number.

3912738831 is a deficient number, since it is larger than the sum of its proper divisors (1883911329).

3912738831 is a wasteful number, since it uses less digits than its factorization.

3912738831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144916262 (or 144916256 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 3912738831 is about 62551.8891081636. The cubic root of 3912738831 is about 1575.7728741927.

The spelling of 3912738831 in words is "three billion, nine hundred twelve million, seven hundred thirty-eight thousand, eight hundred thirty-one".