1156481272 has 8 divisors (see below), whose sum is σ = 2168402400. Its totient is φ = 578240632.

The previous prime is 1156481233. The next prime is 1156481281. The reversal of 1156481272 is 2721846511.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72280072 + ... + 72280087.

It is an arithmetic number, because the mean of its divisors is an integer number (271050300).

Almost surely, 2^1156481272 is an apocalyptic number.

It is an amenable number.

1156481272 is a deficient number, since it is larger than the sum of its proper divisors (1011921128).

1156481272 is a wasteful number, since it uses less digits than its factorization.

1156481272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144560165 (or 144560161 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 1156481272 is about 34007.0767929265. The cubic root of 1156481272 is about 1049.6540877180.

The spelling of 1156481272 in words is "one billion, one hundred fifty-six million, four hundred eighty-one thousand, two hundred seventy-two".