18890552 has 16 divisors (see below), whose sum is σ = 35504160. Its totient is φ = 9422784.

The previous prime is 18890537. The next prime is 18890581. The reversal of 18890552 is 25509881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073 + ... + 6239.

It is an arithmetic number, because the mean of its divisors is an integer number (2219010).

Almost surely, 2^18890552 is an apocalyptic number.

It is an amenable number.

18890552 is a deficient number, since it is larger than the sum of its proper divisors (16613608).

18890552 is a wasteful number, since it uses less digits than its factorization.

18890552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5630 (or 5626 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 18890552 is about 4346.3262647896. The cubic root of 18890552 is about 266.3268073204.

The spelling of 18890552 in words is "eighteen million, eight hundred ninety thousand, five hundred fifty-two".