116581418 has 4 divisors (see below), whose sum is σ = 174872130. Its totient is φ = 58290708.

The previous prime is 116581403. The next prime is 116581429. The reversal of 116581418 is 814185611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814185611 = 1429 ⋅569759.

It can be written as a sum of positive squares in only one way, i.e., 105001009 + 11580409 = 10247^2 + 3403^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29145353 + ... + 29145356.

Almost surely, 2^116581418 is an apocalyptic number.

116581418 is a deficient number, since it is larger than the sum of its proper divisors (58290712).

116581418 is an equidigital number, since it uses as much as digits as its factorization.

116581418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58290711.

The product of its digits is 7680, while the sum is 35.

The square root of 116581418 is about 10797.2875297456. The cubic root of 116581418 is about 488.5133589285.

The spelling of 116581418 in words is "one hundred sixteen million, five hundred eighty-one thousand, four hundred eighteen".