1166442957 has 8 divisors (see below), whose sum is σ = 1728063680. Its totient is φ = 777628620.

The previous prime is 1166442943. The next prime is 1166442971. The reversal of 1166442957 is 7592446611.

1166442957 is a `hidden beast` number, since 116 + 6 + 442 + 95 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (1166442943) and next prime (1166442971).

It is not a de Polignac number, because 1166442957 - 2¹⁰ = 1166441933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166442857) 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, 21600769 + ... + 21600822.

It is an arithmetic number, because the mean of its divisors is an integer number (216007960).

Almost surely, 2^1166442957 is an apocalyptic number.

It is an amenable number.

1166442957 is a deficient number, since it is larger than the sum of its proper divisors (561620723).

1166442957 is an equidigital number, since it uses as much as digits as its factorization.

1166442957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43201600 (or 43201594 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1166442957 is about 34153.2276219979. The cubic root of 1166442957 is about 1052.6593081319.

The spelling of 1166442957 in words is "one billion, one hundred sixty-six million, four hundred forty-two thousand, nine hundred fifty-seven".