1156485975 has 36 divisors (see below), whose sum is σ = 1960043448. Its totient is φ = 601683200.

The previous prime is 1156485961. The next prime is 1156485991. The reversal of 1156485975 is 5795846511.

It is not a de Polignac number, because 1156485975 - 2⁴ = 1156485959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121489 + ... + 130661.

Almost surely, 2^1156485975 is an apocalyptic number.

1156485975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1156485975 is a deficient number, since it is larger than the sum of its proper divisors (803557473).

1156485975 is an equidigital number, since it uses as much as digits as its factorization.

1156485975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268 (or 9222 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 51.

The square root of 1156485975 is about 34007.1459402285. The cubic root of 1156485975 is about 1049.6555105733.

The spelling of 1156485975 in words is "one billion, one hundred fifty-six million, four hundred eighty-five thousand, nine hundred seventy-five".