74181365 has 4 divisors (see below), whose sum is σ = 89017644. Its totient is φ = 59345088.

The previous prime is 74181347. The next prime is 74181427. The reversal of 74181365 is 56318147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56280004 + 17901361 = 7502^2 + 4231^2 .

It is a cyclic number.

It is not a de Polignac number, because 74181365 - 2¹² = 74177269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7418132 + ... + 7418141.

It is an arithmetic number, because the mean of its divisors is an integer number (22254411).

Almost surely, 2^74181365 is an apocalyptic number.

It is an amenable number.

74181365 is a deficient number, since it is larger than the sum of its proper divisors (14836279).

74181365 is a wasteful number, since it uses less digits than its factorization.

74181365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14836278.

The product of its digits is 20160, while the sum is 35.

The square root of 74181365 is about 8612.8604423850. The cubic root of 74181365 is about 420.1763526232.

The spelling of 74181365 in words is "seventy-four million, one hundred eighty-one thousand, three hundred sixty-five".