18343474 has 16 divisors (see below), whose sum is σ = 29098080. Its totient is φ = 8648640.

The previous prime is 18343469. The next prime is 18343477. The reversal of 18343474 is 47434381.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18343477) 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 7 ways as a sum of consecutive naturals, for example, 8157 + ... + 10159.

It is an arithmetic number, because the mean of its divisors is an integer number (1818630).

Almost surely, 2^18343474 is an apocalyptic number.

18343474 is a deficient number, since it is larger than the sum of its proper divisors (10754606).

18343474 is a wasteful number, since it uses less digits than its factorization.

18343474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its digits is 32256, while the sum is 34.

The square root of 18343474 is about 4282.9282039278. The cubic root of 18343474 is about 263.7306040557.

The spelling of 18343474 in words is "eighteen million, three hundred forty-three thousand, four hundred seventy-four".