18874502173 has 8 divisors (see below), whose sum is σ = 19322268768. Its totient is φ = 18427136784.

The previous prime is 18874502147. The next prime is 18874502177. The reversal of 18874502173 is 37120547881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18874502173 - 2³³ = 10284567581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874502177) 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, 4015 + ... + 194332.

It is an arithmetic number, because the mean of its divisors is an integer number (2415283596).

Almost surely, 2^18874502173 is an apocalyptic number.

It is an amenable number.

18874502173 is a deficient number, since it is larger than the sum of its proper divisors (447766595).

18874502173 is a wasteful number, since it uses less digits than its factorization.

18874502173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200603.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 18874502173 in words is "eighteen billion, eight hundred seventy-four million, five hundred two thousand, one hundred seventy-three".