1165440957 has 8 divisors (see below), whose sum is σ = 1557462720. Its totient is φ = 775189920.

The previous prime is 1165440937. The next prime is 1165440961. The reversal of 1165440957 is 7590445611.

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

It is not a de Polignac number, because 1165440957 - 2¹⁴ = 1165424573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165440907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441144 + ... + 443777.

It is an arithmetic number, because the mean of its divisors is an integer number (194682840).

Almost surely, 2^1165440957 is an apocalyptic number.

It is an amenable number.

1165440957 is a deficient number, since it is larger than the sum of its proper divisors (392021763).

1165440957 is an equidigital number, since it uses as much as digits as its factorization.

1165440957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885363.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1165440957 is about 34138.5552857762. Note that the first 3 decimals coincide. The cubic root of 1165440957 is about 1052.3578026628.

The spelling of 1165440957 in words is "one billion, one hundred sixty-five million, four hundred forty thousand, nine hundred fifty-seven".