18645713230 has 32 divisors (see below), whose sum is σ = 34756177248. Its totient is φ = 7197590400.

The previous prime is 18645713221. The next prime is 18645713231. The reversal of 18645713230 is 3231754681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18645713231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256036 + ... + 320695.

It is an arithmetic number, because the mean of its divisors is an integer number (1086130539).

Almost surely, 2^18645713230 is an apocalyptic number.

18645713230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18645713230 is a deficient number, since it is larger than the sum of its proper divisors (16110464018).

18645713230 is a wasteful number, since it uses less digits than its factorization.

18645713230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576852.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 18645713230 in words is "eighteen billion, six hundred forty-five million, seven hundred thirteen thousand, two hundred thirty".