18450530 has 32 divisors (see below), whose sum is σ = 38154240. Its totient is φ = 6292800.

The previous prime is 18450479. The next prime is 18450541. The reversal of 18450530 is 3505481.

It is a self number, because there is not a number n which added to its sum of digits gives 18450530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15455 + ... + 16605.

It is an arithmetic number, because the mean of its divisors is an integer number (1192320).

Almost surely, 2^18450530 is an apocalyptic number.

18450530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18450530 is an abundant number, since it is smaller than the sum of its proper divisors (19703710).

18450530 is a wasteful number, since it uses less digits than its factorization.

18450530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 18450530 is about 4295.4080132160. The cubic root of 18450530 is about 264.2426698132.

The spelling of 18450530 in words is "eighteen million, four hundred fifty thousand, five hundred thirty".