138490683892 has 24 divisors (see below), whose sum is σ = 264400782912. Its totient is φ = 62948054400.

The previous prime is 138490683887. The next prime is 138490683901. The reversal of 138490683892 is 298386094831.

It is a self number, because there is not a number n which added to its sum of digits gives 138490683892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2191417 + ... + 2253727.

It is an arithmetic number, because the mean of its divisors is an integer number (11016699288).

Almost surely, 2^138490683892 is an apocalyptic number.

It is an amenable number.

138490683892 is a deficient number, since it is larger than the sum of its proper divisors (125910099020).

138490683892 is a wasteful number, since it uses less digits than its factorization.

138490683892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112839 (or 112837 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 138490683892 in words is "one hundred thirty-eight billion, four hundred ninety million, six hundred eighty-three thousand, eight hundred ninety-two".