1165257616 has 10 divisors (see below), whose sum is σ = 2257686662. Its totient is φ = 582628800.

The previous prime is 1165257551. The next prime is 1165257619. The reversal of 1165257616 is 6167525611.

It can be written as a sum of positive squares in only one way, i.e., 1107558400 + 57699216 = 33280^2 + 7596^2 .

It is not an unprimeable number, because it can be changed into a prime (1165257619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36414285 + ... + 36414316.

Almost surely, 2^1165257616 is an apocalyptic number.

1165257616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1165257616 is a deficient number, since it is larger than the sum of its proper divisors (1092429046).

1165257616 is an equidigital number, since it uses as much as digits as its factorization.

1165257616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72828609 (or 72828603 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 1165257616 is about 34135.8699317888. The cubic root of 1165257616 is about 1052.3026159832.

The spelling of 1165257616 in words is "one billion, one hundred sixty-five million, two hundred fifty-seven thousand, six hundred sixteen".