931381940018 has 8 divisors (see below), whose sum is σ = 1406325048960. Its totient is φ = 462606923700.

The previous prime is 931381939993. The next prime is 931381940029. The reversal of 931381940018 is 810049183139.

931381940018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542022778 + ... + 1542023381.

It is an arithmetic number, because the mean of its divisors is an integer number (175790631120).

Almost surely, 2^931381940018 is an apocalyptic number.

931381940018 is a deficient number, since it is larger than the sum of its proper divisors (474943108942).

931381940018 is a wasteful number, since it uses less digits than its factorization.

931381940018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084046312.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 931381940018 in words is "nine hundred thirty-one billion, three hundred eighty-one million, nine hundred forty thousand, eighteen".