1151949972 has 12 divisors (see below), whose sum is σ = 2687883296. Its totient is φ = 383983320.

The previous prime is 1151949947. The next prime is 1151949973. The reversal of 1151949972 is 2799491511.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151949973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47997904 + ... + 47997927.

Almost surely, 2^1151949972 is an apocalyptic number.

1151949972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1151949972 is an abundant number, since it is smaller than the sum of its proper divisors (1535933324).

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

1151949972 is a wasteful number, since it uses less digits than its factorization.

1151949972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95995838 (or 95995836 counting only the distinct ones).

The product of its digits is 204120, while the sum is 48.

The square root of 1151949972 is about 33940.3885069102. The cubic root of 1151949972 is about 1048.2813826432.

It can be divided in two parts, 1151949 and 972, that added together give a triangular number (1152921 = T₁₅₁₈).

The spelling of 1151949972 in words is "one billion, one hundred fifty-one million, nine hundred forty-nine thousand, nine hundred seventy-two".