18680030 has 32 divisors (see below), whose sum is σ = 34604928. Its totient is φ = 7257600.

The previous prime is 18680027. The next prime is 18680033. The reversal of 18680030 is 3008681.

It is an interprime number because it is at equal distance from previous prime (18680027) and next prime (18680033).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18680033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68795 + ... + 69065.

It is an arithmetic number, because the mean of its divisors is an integer number (1081404).

Almost surely, 2^18680030 is an apocalyptic number.

18680030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18680030 is a deficient number, since it is larger than the sum of its proper divisors (15924898).

18680030 is a wasteful number, since it uses less digits than its factorization.

18680030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18680030 is about 4322.0400275796. The cubic root of 18680030 is about 265.3337671741. Note that the first 3 decimals are identical.

The spelling of 18680030 in words is "eighteen million, six hundred eighty thousand, thirty".