18340674 has 16 divisors (see below), whose sum is σ = 40016160. Its totient is φ = 5557760.

The previous prime is 18340639. The next prime is 18340709. The reversal of 18340674 is 47604381.

It is an interprime number because it is at equal distance from previous prime (18340639) and next prime (18340709).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

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, 138879 + ... + 139010.

It is an arithmetic number, because the mean of its divisors is an integer number (2501010).

Almost surely, 2^18340674 is an apocalyptic number.

18340674 is an abundant number, since it is smaller than the sum of its proper divisors (21675486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18340674 is a wasteful number, since it uses less digits than its factorization.

18340674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277905.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 18340674 is about 4282.6013122867. The cubic root of 18340674 is about 263.7171845100.

The spelling of 18340674 in words is "eighteen million, three hundred forty thousand, six hundred seventy-four".