18825371224 has 32 divisors (see below), whose sum is σ = 38903432400. Its totient is φ = 8468766720.

The previous prime is 18825371221. The next prime is 18825371237. The reversal of 18825371224 is 42217352881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825371221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094169 + ... + 1111240.

Almost surely, 2^18825371224 is an apocalyptic number.

It is an amenable number.

18825371224 is an abundant number, since it is smaller than the sum of its proper divisors (20078061176).

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

18825371224 is a wasteful number, since it uses less digits than its factorization.

18825371224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205523 (or 2205519 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The spelling of 18825371224 in words is "eighteen billion, eight hundred twenty-five million, three hundred seventy-one thousand, two hundred twenty-four".