18977852 has 12 divisors (see below), whose sum is σ = 34655376. Its totient is φ = 9076320.

The previous prime is 18977843. The next prime is 18977863. The reversal of 18977852 is 25877981.

It is a junction number, because it is equal to n+sod(n) for n = 18977797 and 18977806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103049 + ... + 103232.

It is an arithmetic number, because the mean of its divisors is an integer number (2887948).

Almost surely, 2^18977852 is an apocalyptic number.

It is an amenable number.

18977852 is a deficient number, since it is larger than the sum of its proper divisors (15677524).

18977852 is a wasteful number, since it uses less digits than its factorization.

18977852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206308 (or 206306 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 18977852 is about 4356.3576529022. The cubic root of 18977852 is about 266.7364407696.

The spelling of 18977852 in words is "eighteen million, nine hundred seventy-seven thousand, eight hundred fifty-two".