1162405881 has 36 divisors (see below), whose sum is σ = 2103411492. Its totient is φ = 613134144.

The previous prime is 1162405877. The next prime is 1162405891. The reversal of 1162405881 is 1885042611.

1162405881 is a `hidden beast` number, since 11 + 62 + 4 + 0 + 588 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 721405881 + 441000000 = 26859^2 + 21000^2 .

It is not a de Polignac number, because 1162405881 - 2² = 1162405877 is a prime.

It is a super-2 number, since 2×1162405881² = 2702374864366772322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1162405831) 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 in 35 ways as a sum of consecutive naturals, for example, 95646 + ... + 107111.

It is an arithmetic number, because the mean of its divisors is an integer number (58428097).

Almost surely, 2^1162405881 is an apocalyptic number.

It is an amenable number.

1162405881 is a deficient number, since it is larger than the sum of its proper divisors (941005611).

1162405881 is a wasteful number, since it uses less digits than its factorization.

1162405881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202790 (or 202780 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1162405881 is about 34094.0739865449. The cubic root of 1162405881 is about 1051.4434813398.

The spelling of 1162405881 in words is "one billion, one hundred sixty-two million, four hundred five thousand, eight hundred eighty-one".