18397148 has 96 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 6726720.

The previous prime is 18397133. The next prime is 18397157. The reversal of 18397148 is 84179381.

Its product of digits (48384) is a multiple of the sum of its prime divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347090 + ... + 347142.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^18397148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18397148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21772800).

18397148 is an abundant number, since it is smaller than the sum of its proper divisors (25148452).

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

18397148 is a wasteful number, since it uses less digits than its factorization.

18397148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 96 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 18397148 is about 4289.1896670583. The cubic root of 18397148 is about 263.9875835911.

The spelling of 18397148 in words is "eighteen million, three hundred ninety-seven thousand, one hundred forty-eight".