18874064 has 30 divisors (see below), whose sum is σ = 40199250. Its totient is φ = 8578240.

The previous prime is 18874061. The next prime is 18874067. The reversal of 18874064 is 46047881.

It is an interprime number because it is at equal distance from previous prime (18874061) and next prime (18874067).

It can be written as a sum of positive squares in only one way, i.e., 13017664 + 5856400 = 3608^2 + 2420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2939 + ... + 6810.

It is an arithmetic number, because the mean of its divisors is an integer number (1339975).

Almost surely, 2^18874064 is an apocalyptic number.

It is an amenable number.

18874064 is an abundant number, since it is smaller than the sum of its proper divisors (21325186).

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

18874064 is a wasteful number, since it uses less digits than its factorization.

18874064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779 (or 9762 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 18874064 is about 4344.4290764150. The cubic root of 18874064 is about 266.2492998872.

The spelling of 18874064 in words is "eighteen million, eight hundred seventy-four thousand, sixty-four".