1113437161 has 2 divisors, whose sum is σ = 1113437162. Its totient is φ = 1113437160.

The previous prime is 1113437147. The next prime is 1113437167. The reversal of 1113437161 is 1617343111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964475136 + 148962025 = 31056^2 + 12205^2 .

It is an emirp because it is prime and its reverse (1617343111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1113437161 - 2⁷ = 1113437033 is a prime.

It is a super-2 number, since 2×1113437161² = 2479484622991479842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1113437167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556718580 + 556718581.

It is an arithmetic number, because the mean of its divisors is an integer number (556718581).

Almost surely, 2^1113437161 is an apocalyptic number.

It is an amenable number.

1113437161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113437161 is an equidigital number, since it uses as much as digits as its factorization.

1113437161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 1113437161 is about 33368.2058402905. The cubic root of 1113437161 is about 1036.4664226684.

The spelling of 1113437161 in words is "one billion, one hundred thirteen million, four hundred thirty-seven thousand, one hundred sixty-one".