18820148 has 12 divisors (see below), whose sum is σ = 33738852. Its totient is φ = 9180480.

The previous prime is 18820129. The next prime is 18820169. The reversal of 18820148 is 84102881.

It can be written as a sum of positive squares in 2 ways, for example, as 5189284 + 13630864 = 2278^2 + 3692^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 57215 + ... + 57542.

It is an arithmetic number, because the mean of its divisors is an integer number (2811571).

Almost surely, 2^18820148 is an apocalyptic number.

It is an amenable number.

18820148 is a deficient number, since it is larger than the sum of its proper divisors (14918704).

18820148 is a wasteful number, since it uses less digits than its factorization.

18820148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114802 (or 114800 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 18820148 is about 4338.2194504197. The cubic root of 18820148 is about 265.9955338727.

The spelling of 18820148 in words is "eighteen million, eight hundred twenty thousand, one hundred forty-eight".