74118891 has 16 divisors (see below), whose sum is σ = 123211008. Its totient is φ = 38503200.

The previous prime is 74118841. The next prime is 74118899. The reversal of 74118891 is 19881147.

It is not a de Polignac number, because 74118891 - 2⁷ = 74118763 is a prime.

It is a super-2 number, since 2×74118891² = 10987220006139762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74118899) 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 15 ways as a sum of consecutive naturals, for example, 160200 + ... + 160661.

It is an arithmetic number, because the mean of its divisors is an integer number (7700688).

Almost surely, 2^74118891 is an apocalyptic number.

74118891 is a deficient number, since it is larger than the sum of its proper divisors (49092117).

74118891 is a wasteful number, since it uses less digits than its factorization.

74118891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320882.

The product of its digits is 16128, while the sum is 39.

The square root of 74118891 is about 8609.2328926566. The cubic root of 74118891 is about 420.0583649049.

The spelling of 74118891 in words is "seventy-four million, one hundred eighteen thousand, eight hundred ninety-one".