18988200472 has 32 divisors (see below), whose sum is σ = 36292492800. Its totient is φ = 9311796000.

The previous prime is 18988200437. The next prime is 18988200499. The reversal of 18988200472 is 27400288981.

It is a super-2 number, since 2×18988200472² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 4054 + ... + 194917.

It is an arithmetic number, because the mean of its divisors is an integer number (1134140400).

Almost surely, 2^18988200472 is an apocalyptic number.

It is an amenable number.

18988200472 is a deficient number, since it is larger than the sum of its proper divisors (17304292328).

18988200472 is a wasteful number, since it uses less digits than its factorization.

18988200472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199207 (or 199203 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 18988200472 in words is "eighteen billion, nine hundred eighty-eight million, two hundred thousand, four hundred seventy-two".