185931083940340 has 96 divisors (see below), whose sum is σ = 401784887314944. Its totient is φ = 72222285726720.

The previous prime is 185931083940317. The next prime is 185931083940397. The reversal of 185931083940340 is 43049380139581.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270842072 + ... + 1270988368.

It is an arithmetic number, because the mean of its divisors is an integer number (4185259242864).

Almost surely, 2^{185931083940340} is an apocalyptic number.

185931083940340 is a gapful number since it is divisible by the number (10) 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 185931083940340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200892443657472).

185931083940340 is an abundant number, since it is smaller than the sum of its proper divisors (215853803374604).

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

185931083940340 is a wasteful number, since it uses less digits than its factorization.

185931083940340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149657 (or 149655 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 185931083940340 in words is "one hundred eighty-five trillion, nine hundred thirty-one billion, eighty-three million, nine hundred forty thousand, three hundred forty".