83401931388 has 48 divisors (see below), whose sum is σ = 206100072864. Its totient is φ = 26159185920.

The previous prime is 83401931381. The next prime is 83401931399. The reversal of 83401931388 is 88313910438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83401931381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 868506 + ... + 959742.

It is an arithmetic number, because the mean of its divisors is an integer number (4293751518).

Almost surely, 2^83401931388 is an apocalyptic number.

It is an amenable number.

83401931388 is an abundant number, since it is smaller than the sum of its proper divisors (122698141476).

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

83401931388 is a wasteful number, since it uses less digits than its factorization.

83401931388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95742 (or 95740 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 83401931388 in words is "eighty-three billion, four hundred one million, nine hundred thirty-one thousand, three hundred eighty-eight".