18950133272 has 16 divisors (see below), whose sum is σ = 40607428560. Its totient is φ = 8121485664.

The previous prime is 18950133263. The next prime is 18950133283. The reversal of 18950133272 is 27233105981.

It is a super-2 number, since 2×18950133272² (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 3 ways as a sum of consecutive naturals, for example, 169197563 + ... + 169197674.

It is an arithmetic number, because the mean of its divisors is an integer number (2537964285).

Almost surely, 2^18950133272 is an apocalyptic number.

It is an amenable number.

18950133272 is an abundant number, since it is smaller than the sum of its proper divisors (21657295288).

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

18950133272 is a wasteful number, since it uses less digits than its factorization.

18950133272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338395250 (or 338395246 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 18950133272 in words is "eighteen billion, nine hundred fifty million, one hundred thirty-three thousand, two hundred seventy-two".