1113827161 has 2 divisors, whose sum is σ = 1113827162. Its totient is φ = 1113827160.

The previous prime is 1113827159. The next prime is 1113827167. The reversal of 1113827161 is 1617283111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084450761 + 29376400 = 32931^2 + 5420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113827161 - 2¹ = 1113827159 is a prime.

It is a super-2 number, since 2×1113827161² = 2481221889162639842, which contains 22 as substring.

Together with 1113827159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1113827167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556913580 + 556913581.

It is an arithmetic number, because the mean of its divisors is an integer number (556913581).

Almost surely, 2^1113827161 is an apocalyptic number.

It is an amenable number.

1113827161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113827161 is an equidigital number, since it uses as much as digits as its factorization.

1113827161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 31.

The square root of 1113827161 is about 33374.0492149215. The cubic root of 1113827161 is about 1036.5874217791.

The spelling of 1113827161 in words is "one billion, one hundred thirteen million, eight hundred twenty-seven thousand, one hundred sixty-one".