18897882 has 8 divisors (see below), whose sum is σ = 37795776. Its totient is φ = 6299292.

The previous prime is 18897871. The next prime is 18897883. The reversal of 18897882 is 28879881.

It is a happy number.

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

18897882 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18897883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574818 + ... + 1574829.

It is an arithmetic number, because the mean of its divisors is an integer number (4724472).

Almost surely, 2^18897882 is an apocalyptic number.

18897882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18897882 is a wasteful number, since it uses less digits than its factorization.

18897882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149652.

The product of its digits is 516096, while the sum is 51.

The square root of 18897882 is about 4347.1694238895. The cubic root of 18897882 is about 266.3612499888.

The spelling of 18897882 in words is "eighteen million, eight hundred ninety-seven thousand, eight hundred eighty-two".