18148988 has 24 divisors (see below), whose sum is σ = 37314480. Its totient is φ = 7614720.

The previous prime is 18148973. The next prime is 18149017. The reversal of 18148988 is 88984181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15293 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (1554770).

Almost surely, 2^18148988 is an apocalyptic number.

It is an amenable number.

18148988 is an abundant number, since it is smaller than the sum of its proper divisors (19165492).

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

18148988 is a wasteful number, since it uses less digits than its factorization.

18148988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31757 (or 31755 counting only the distinct ones).

The product of its digits is 147456, while the sum is 47.

The square root of 18148988 is about 4260.1629076832. The cubic root of 18148988 is about 262.7952258183.

The spelling of 18148988 in words is "eighteen million, one hundred forty-eight thousand, nine hundred eighty-eight".