1899967272 has 32 divisors (see below), whose sum is σ = 5428478400. Its totient is φ = 542847744.

The previous prime is 1899967271. The next prime is 1899967357. The reversal of 1899967272 is 2727699981.

It is a super-2 number, since 2×1899967272² = 7219751269342243968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1899967271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5654497 + ... + 5654832.

It is an arithmetic number, because the mean of its divisors is an integer number (169639950).

Almost surely, 2^1899967272 is an apocalyptic number.

1899967272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1899967272 is an abundant number, since it is smaller than the sum of its proper divisors (3528511128).

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

1899967272 is a wasteful number, since it uses less digits than its factorization.

1899967272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11309345 (or 11309341 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 60.

The square root of 1899967272 is about 43588.6140178832. The cubic root of 1899967272 is about 1238.5552180686. Note that the first 3 decimals are identical.

The spelling of 1899967272 in words is "one billion, eight hundred ninety-nine million, nine hundred sixty-seven thousand, two hundred seventy-two".