18820150 has 24 divisors (see below), whose sum is σ = 35325864. Its totient is φ = 7459200.

The previous prime is 18820129. The next prime is 18820169. The reversal of 18820150 is 5102881.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3985 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (1471911).

Almost surely, 2^18820150 is an apocalyptic number.

18820150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18820150 is a deficient number, since it is larger than the sum of its proper divisors (16505714).

18820150 is a wasteful number, since it uses less digits than its factorization.

18820150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 18820150 is about 4338.2196809290. The cubic root of 18820150 is about 265.9955432950.

The spelling of 18820150 in words is "eighteen million, eight hundred twenty thousand, one hundred fifty".