18835930 has 16 divisors (see below), whose sum is σ = 34110720. Its totient is φ = 7488592.

The previous prime is 18835913. The next prime is 18835939. The reversal of 18835930 is 3953881.

18835930 = T₃₈₉ + T₃₉₀ + ... + T₅₅₅.

It is a self number, because there is not a number n which added to its sum of digits gives 18835930.

It is not an unprimeable number, because it can be changed into a prime (18835939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3970 + ... + 7309.

It is an arithmetic number, because the mean of its divisors is an integer number (2131920).

Almost surely, 2^18835930 is an apocalyptic number.

18835930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18835930 is a deficient number, since it is larger than the sum of its proper divisors (15274790).

18835930 is a wasteful number, since it uses less digits than its factorization.

18835930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 18835930 is about 4340.0380182667. The cubic root of 18835930 is about 266.0698650033.

The spelling of 18835930 in words is "eighteen million, eight hundred thirty-five thousand, nine hundred thirty".