1166157145 has 24 divisors (see below), whose sum is σ = 1442733768. Its totient is φ = 904550400.

The previous prime is 1166157133. The next prime is 1166157151. The reversal of 1166157145 is 5417516611.

It can be written as a sum of positive squares in 4 ways, for example, as 102353689 + 1063803456 = 10117^2 + 32616^2 .

It is not a de Polignac number, because 1166157145 - 2¹³ = 1166148953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6042169 + ... + 6042361.

It is an arithmetic number, because the mean of its divisors is an integer number (60113907).

Almost surely, 2^1166157145 is an apocalyptic number.

It is an amenable number.

1166157145 is a deficient number, since it is larger than the sum of its proper divisors (276576623).

1166157145 is an equidigital number, since it uses as much as digits as its factorization.

1166157145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 402 counting only the distinct ones).

The product of its digits is 25200, while the sum is 37.

The square root of 1166157145 is about 34149.0431051882. The cubic root of 1166157145 is about 1052.5733238618.

The spelling of 1166157145 in words is "one billion, one hundred sixty-six million, one hundred fifty-seven thousand, one hundred forty-five".