18398002 has 8 divisors (see below), whose sum is σ = 31539456. Its totient is φ = 7884852.

The previous prime is 18397993. The next prime is 18398011. The reversal of 18398002 is 20089381.

It is an interprime number because it is at equal distance from previous prime (18397993) and next prime (18398011).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657058 + ... + 657085.

It is an arithmetic number, because the mean of its divisors is an integer number (3942432).

Almost surely, 2^18398002 is an apocalyptic number.

18398002 is a deficient number, since it is larger than the sum of its proper divisors (13141454).

18398002 is a wasteful number, since it uses less digits than its factorization.

18398002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314152.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18398002 is about 4289.2892185070. The cubic root of 18398002 is about 263.9916683168.

The spelling of 18398002 in words is "eighteen million, three hundred ninety-eight thousand, two".