18938656567252 has 12 divisors (see below), whose sum is σ = 33162530617440. Its totient is φ = 9463647819416.

The previous prime is 18938656567241. The next prime is 18938656567279. The reversal of 18938656567252 is 25276565683981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420108552 + ... + 1420121887.

It is an arithmetic number, because the mean of its divisors is an integer number (2763544218120).

Almost surely, 2^{18938656567252} is an apocalyptic number.

It is an amenable number.

18938656567252 is a deficient number, since it is larger than the sum of its proper divisors (14223874050188).

18938656567252 is a wasteful number, since it uses less digits than its factorization.

18938656567252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840232110 (or 2840232108 counting only the distinct ones).

The product of its digits is 1306368000, while the sum is 73.

The spelling of 18938656567252 in words is "eighteen trillion, nine hundred thirty-eight billion, six hundred fifty-six million, five hundred sixty-seven thousand, two hundred fifty-two".