1166625931 has 8 divisors (see below), whose sum is σ = 1196814528. Its totient is φ = 1136520000.

The previous prime is 1166625893. The next prime is 1166625953. The reversal of 1166625931 is 1395266611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1166625931 - 2¹⁵ = 1166593163 is a prime.

It is a super-2 number, since 2×1166625931² = 2722032125763233522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166625331) 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 7 ways as a sum of consecutive naturals, for example, 8446 + ... + 49036.

It is an arithmetic number, because the mean of its divisors is an integer number (149601816).

Almost surely, 2^1166625931 is an apocalyptic number.

1166625931 is a deficient number, since it is larger than the sum of its proper divisors (30188597).

1166625931 is an equidigital number, since it uses as much as digits as its factorization.

1166625931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41333.

The product of its digits is 58320, while the sum is 40.

The square root of 1166625931 is about 34155.9062388923. The cubic root of 1166625931 is about 1052.7143470325.

The spelling of 1166625931 in words is "one billion, one hundred sixty-six million, six hundred twenty-five thousand, nine hundred thirty-one".