18975903425956 has 27 divisors (see below), whose sum is σ = 33683232469537. Its totient is φ = 9354013660880.

The previous prime is 18975903425929. The next prime is 18975903426017. The reversal of 18975903425956 is 65952430957981.

The square root of 18975903425956 is 4356134.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14101451936100 + 4874451489856 = 3755190^2 + 2207816^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 618555690 + ... + 618586366.

It is a 1-persistent number, because it is pandigital, but 2⋅18975903425956 = 37951806851912 is not.

Almost surely, 2^{18975903425956} is an apocalyptic number.

18975903425956 is the 4356134-th square number.

It is an amenable number.

18975903425956 is a deficient number, since it is larger than the sum of its proper divisors (14707329043581).

18975903425956 is an frugal number, since it uses more digits than its factorization.

18975903425956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61500 (or 30750 counting only the distinct ones).

The product of its (nonzero) digits is 734832000, while the sum is 73.

The spelling of 18975903425956 in words is "eighteen trillion, nine hundred seventy-five billion, nine hundred three million, four hundred twenty-five thousand, nine hundred fifty-six".