18032930 has 8 divisors (see below), whose sum is σ = 32459292. Its totient is φ = 7213168.

The previous prime is 18032923. The next prime is 18032933. The reversal of 18032930 is 3923081.

It can be written as a sum of positive squares in 2 ways, for example, as 16008001 + 2024929 = 4001^2 + 1423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18032930.

It is not an unprimeable number, because it can be changed into a prime (18032933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901637 + ... + 901656.

Almost surely, 2^18032930 is an apocalyptic number.

18032930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18032930 is a deficient number, since it is larger than the sum of its proper divisors (14426362).

18032930 is a wasteful number, since it uses less digits than its factorization.

18032930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803300.

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

The square root of 18032930 is about 4246.5197515142. The cubic root of 18032930 is about 262.2338587540.

The spelling of 18032930 in words is "eighteen million, thirty-two thousand, nine hundred thirty".