1161613458 has 12 divisors (see below), whose sum is σ = 2516829198. Its totient is φ = 387204480.

The previous prime is 1161613441. The next prime is 1161613471. The reversal of 1161613458 is 8543161611.

It is a happy number.

1161613458 is a `hidden beast` number, since 1 + 1 + 616 + 1 + 34 + 5 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1144942569 + 16670889 = 33837^2 + 4083^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32267023 + ... + 32267058.

Almost surely, 2^1161613458 is an apocalyptic number.

1161613458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1161613458 is an abundant number, since it is smaller than the sum of its proper divisors (1355215740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161613458 is a wasteful number, since it uses less digits than its factorization.

1161613458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64534089 (or 64534086 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1161613458 is about 34082.4508801817. The cubic root of 1161613458 is about 1051.2045007296.

The spelling of 1161613458 in words is "one billion, one hundred sixty-one million, six hundred thirteen thousand, four hundred fifty-eight".