18925138570 has 32 divisors (see below), whose sum is σ = 36699868800. Its totient is φ = 6985035840.

The previous prime is 18925138567. The next prime is 18925138591. The reversal of 18925138570 is 7583152981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325581 + ... + 379279.

It is an arithmetic number, because the mean of its divisors is an integer number (1146870900).

Almost surely, 2^18925138570 is an apocalyptic number.

18925138570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18925138570 is a deficient number, since it is larger than the sum of its proper divisors (17774730230).

18925138570 is a wasteful number, since it uses less digits than its factorization.

18925138570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56430.

The product of its (nonzero) digits is 604800, while the sum is 49.

The spelling of 18925138570 in words is "eighteen billion, nine hundred twenty-five million, one hundred thirty-eight thousand, five hundred seventy".