18227700472 has 16 divisors (see below), whose sum is σ = 34185083400. Its totient is φ = 9111678240.

The previous prime is 18227700433. The next prime is 18227700493. The reversal of 18227700472 is 27400772281.

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, 235554 + ... + 303217.

Almost surely, 2^18227700472 is an apocalyptic number.

It is an amenable number.

18227700472 is a deficient number, since it is larger than the sum of its proper divisors (15957382928).

18227700472 is a wasteful number, since it uses less digits than its factorization.

18227700472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543006 (or 543002 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 40.

The spelling of 18227700472 in words is "eighteen billion, two hundred twenty-seven million, seven hundred thousand, four hundred seventy-two".