18793825856 has 56 divisors (see below), whose sum is σ = 42525315000. Its totient is φ = 8163827712.

The previous prime is 18793825847. The next prime is 18793825861. The reversal of 18793825856 is 65852839781.

It can be written as a sum of positive squares in 4 ways, for example, as 805651456 + 17988174400 = 28384^2 + 134120^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650231 + ... + 678518.

It is an arithmetic number, because the mean of its divisors is an integer number (759380625).

Almost surely, 2^18793825856 is an apocalyptic number.

18793825856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18793825856 is an abundant number, since it is smaller than the sum of its proper divisors (23731489144).

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

18793825856 is a wasteful number, since it uses less digits than its factorization.

18793825856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328791 (or 1328781 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 62.

The spelling of 18793825856 in words is "eighteen billion, seven hundred ninety-three million, eight hundred twenty-five thousand, eight hundred fifty-six".