18972414 has 16 divisors (see below), whose sum is σ = 42161040. Its totient is φ = 6324120.

The previous prime is 18972413. The next prime is 18972419. The reversal of 18972414 is 41427981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18972413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175617 + ... + 175724.

It is an arithmetic number, because the mean of its divisors is an integer number (2635065).

Almost surely, 2^18972414 is an apocalyptic number.

18972414 is an abundant number, since it is smaller than the sum of its proper divisors (23188626).

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

18972414 is a wasteful number, since it uses less digits than its factorization.

18972414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351352 (or 351346 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 18972414 is about 4355.7334629199. The cubic root of 18972414 is about 266.7109610449.

The spelling of 18972414 in words is "eighteen million, nine hundred seventy-two thousand, four hundred fourteen".