18948398 has 24 divisors (see below), whose sum is σ = 33242400. Its totient is φ = 8076768.

The previous prime is 18948383. The next prime is 18948407. The reversal of 18948398 is 89384981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23018 + ... + 23826.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^18948398 is an apocalyptic number.

18948398 is a deficient number, since it is larger than the sum of its proper divisors (14294002).

18948398 is a wasteful number, since it uses less digits than its factorization.

18948398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064 (or 1057 counting only the distinct ones).

The product of its digits is 497664, while the sum is 50.

The square root of 18948398 is about 4352.9757637736. The cubic root of 18948398 is about 266.5983759157.

The spelling of 18948398 in words is "eighteen million, nine hundred forty-eight thousand, three hundred ninety-eight".