94118581 has 4 divisors (see below), whose sum is σ = 96121152. Its totient is φ = 92116012.

The previous prime is 94118561. The next prime is 94118587. The reversal of 94118581 is 18581149.

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: 18581149 = 61 ⋅304609.

It is a cyclic number.

It is not a de Polignac number, because 94118581 - 2²¹ = 92021429 is a prime.

It is a super-2 number, since 2×94118581² = 17716614578907122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94118581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94118587) 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, 1001215 + ... + 1001308.

It is an arithmetic number, because the mean of its divisors is an integer number (24030288).

Almost surely, 2^94118581 is an apocalyptic number.

It is an amenable number.

94118581 is a deficient number, since it is larger than the sum of its proper divisors (2002571).

94118581 is a wasteful number, since it uses less digits than its factorization.

94118581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002570.

The product of its digits is 11520, while the sum is 37.

The square root of 94118581 is about 9701.4731355604. The cubic root of 94118581 is about 454.8747084881.

The spelling of 94118581 in words is "ninety-four million, one hundred eighteen thousand, five hundred eighty-one".