18696530 has 16 divisors (see below), whose sum is σ = 33718464. Its totient is φ = 7464240.

The previous prime is 18696523. The next prime is 18696547. The reversal of 18696530 is 3569681.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4829 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (2107404).

Almost surely, 2^18696530 is an apocalyptic number.

18696530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18696530 is a deficient number, since it is larger than the sum of its proper divisors (15021934).

18696530 is a wasteful number, since it uses less digits than its factorization.

18696530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 18696530 is about 4323.9484270745. The cubic root of 18696530 is about 265.4118669552.

The spelling of 18696530 in words is "eighteen million, six hundred ninety-six thousand, five hundred thirty".