18472204387 has 12 divisors (see below), whose sum is σ = 23141004096. Its totient is φ = 14615370000.

The previous prime is 18472204367. The next prime is 18472204447. The reversal of 18472204387 is 78340227481.

It is not a de Polignac number, because 18472204387 - 2⁷ = 18472204259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18472204367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14498739 + ... + 14500012.

It is an arithmetic number, because the mean of its divisors is an integer number (1928417008).

Almost surely, 2^18472204387 is an apocalyptic number.

18472204387 is a deficient number, since it is larger than the sum of its proper divisors (4668799709).

18472204387 is a wasteful number, since it uses less digits than its factorization.

18472204387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28998778 (or 28998771 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 18472204387 in words is "eighteen billion, four hundred seventy-two million, two hundred four thousand, three hundred eighty-seven".