138802949748 has 72 divisors (see below), whose sum is σ = 374670266880. Its totient is φ = 43231164480.

The previous prime is 138802949723. The next prime is 138802949801. The reversal of 138802949748 is 847949208831.

138802949748 is a `hidden beast` number, since 1 + 3 + 8 + 80 + 29 + 497 + 48 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2112040 + ... + 2176767.

Almost surely, 2^138802949748 is an apocalyptic number.

138802949748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

138802949748 is an abundant number, since it is smaller than the sum of its proper divisors (235867317132).

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

138802949748 is a wasteful number, since it uses less digits than its factorization.

138802949748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288877 (or 4288872 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

It can be divided in two parts, 138802 and 949748, that added together give a triangular number (1088550 = T₁₄₇₅).

The spelling of 138802949748 in words is "one hundred thirty-eight billion, eight hundred two million, nine hundred forty-nine thousand, seven hundred forty-eight".