1151911272 has 16 divisors (see below), whose sum is σ = 2879778240. Its totient is φ = 383970416.

The previous prime is 1151911261. The next prime is 1151911289. The reversal of 1151911272 is 2721191511.

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, 23998128 + ... + 23998175.

It is an arithmetic number, because the mean of its divisors is an integer number (179986140).

Almost surely, 2^1151911272 is an apocalyptic number.

1151911272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1151911272 is an abundant number, since it is smaller than the sum of its proper divisors (1727866968).

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

1151911272 is a wasteful number, since it uses less digits than its factorization.

1151911272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47996312 (or 47996308 counting only the distinct ones).

The product of its digits is 1260, while the sum is 30.

The square root of 1151911272 is about 33939.8183849001. The cubic root of 1151911272 is about 1048.2696434344.

It can be divided in two parts, 11519 and 11272, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 1151911272 in words is "one billion, one hundred fifty-one million, nine hundred eleven thousand, two hundred seventy-two".