116490581 has 4 divisors (see below), whose sum is σ = 118969152. Its totient is φ = 114012012.

The previous prime is 116490547. The next prime is 116490601. The reversal of 116490581 is 185094611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 185094611 = 13 ⋅14238047.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116490581 is a prime.

It is a super-2 number, since 2×116490581² = 27140110923435122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116492581) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1239215 + ... + 1239308.

It is an arithmetic number, because the mean of its divisors is an integer number (29742288).

Almost surely, 2^116490581 is an apocalyptic number.

It is an amenable number.

116490581 is a deficient number, since it is larger than the sum of its proper divisors (2478571).

116490581 is an equidigital number, since it uses as much as digits as its factorization.

116490581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478570.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 116490581 is about 10793.0802368925. The cubic root of 116490581 is about 488.3864472845.

The spelling of 116490581 in words is "one hundred sixteen million, four hundred ninety thousand, five hundred eighty-one".