138902637629 has 8 divisors (see below), whose sum is σ = 158770447680. Its totient is φ = 119040971616.

The previous prime is 138902637619. The next prime is 138902637667. The reversal of 138902637629 is 926736209831.

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

It is a de Polignac number, because none of the positive numbers 2^k-138902637629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138902637619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1487459 + ... + 1578080.

It is an arithmetic number, because the mean of its divisors is an integer number (19846305960).

Almost surely, 2^138902637629 is an apocalyptic number.

It is an amenable number.

138902637629 is a deficient number, since it is larger than the sum of its proper divisors (19867810051).

138902637629 is an equidigital number, since it uses as much as digits as its factorization.

138902637629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072019.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 138902637629 in words is "one hundred thirty-eight billion, nine hundred two million, six hundred thirty-seven thousand, six hundred twenty-nine".