18226801524 has 12 divisors (see below), whose sum is σ = 42529203584. Its totient is φ = 6075600504.

The previous prime is 18226801519. The next prime is 18226801531. The reversal of 18226801524 is 42510862281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 759450052 + ... + 759450075.

Almost surely, 2^18226801524 is an apocalyptic number.

It is an amenable number.

18226801524 is an abundant number, since it is smaller than the sum of its proper divisors (24302402060).

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

18226801524 is a wasteful number, since it uses less digits than its factorization.

18226801524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518900134 (or 1518900132 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 18226801524 in words is "eighteen billion, two hundred twenty-six million, eight hundred one thousand, five hundred twenty-four".