18842030 has 32 divisors (see below), whose sum is σ = 35100864. Its totient is φ = 7278336.

The previous prime is 18842029. The next prime is 18842071. The reversal of 18842030 is 3024881.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 38447 + ... + 38933.

It is an arithmetic number, because the mean of its divisors is an integer number (1096902).

Almost surely, 2^18842030 is an apocalyptic number.

18842030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18842030 is a deficient number, since it is larger than the sum of its proper divisors (16258834).

18842030 is a wasteful number, since it uses less digits than its factorization.

18842030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18842030 is about 4340.7407201997. The cubic root of 18842030 is about 266.0985840703.

The spelling of 18842030 in words is "eighteen million, eight hundred forty-two thousand, thirty".