1157474137 has 2 divisors, whose sum is σ = 1157474138. Its totient is φ = 1157474136.

The previous prime is 1157474113. The next prime is 1157474159. The reversal of 1157474137 is 7314747511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797271696 + 360202441 = 28236^2 + 18979^2 .

It is an emirp because it is prime and its reverse (7314747511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157474137 - 2⁷ = 1157474009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1157474137.

It is not a weakly prime, because it can be changed into another prime (1157474177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578737068 + 578737069.

It is an arithmetic number, because the mean of its divisors is an integer number (578737069).

Almost surely, 2^1157474137 is an apocalyptic number.

It is an amenable number.

1157474137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157474137 is an equidigital number, since it uses as much as digits as its factorization.

1157474137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82320, while the sum is 40.

The square root of 1157474137 is about 34021.6715785689. The cubic root of 1157474137 is about 1049.9543856224.

The spelling of 1157474137 in words is "one billion, one hundred fifty-seven million, four hundred seventy-four thousand, one hundred thirty-seven".