18302930 has 16 divisors (see below), whose sum is σ = 33286680. Its totient is φ = 7245312.

The previous prime is 18302923. The next prime is 18302951. The reversal of 18302930 is 3920381.

It can be written as a sum of positive squares in 4 ways, for example, as 17783089 + 519841 = 4217^2 + 721^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18302930.

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 7 ways as a sum of consecutive naturals, for example, 8465 + ... + 10404.

Almost surely, 2^18302930 is an apocalyptic number.

18302930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18302930 is a deficient number, since it is larger than the sum of its proper divisors (14983750).

18302930 is a wasteful number, since it uses less digits than its factorization.

18302930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18973.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 18302930 is about 4278.1923752912. The cubic root of 18302930 is about 263.5361555886.

The spelling of 18302930 in words is "eighteen million, three hundred two thousand, nine hundred thirty".