18213324730 has 16 divisors (see below), whose sum is σ = 32785645824. Its totient is φ = 7284960720.

The previous prime is 18213324719. The next prime is 18213324739. The reversal of 18213324730 is 3742331281.

It is not an unprimeable number, because it can be changed into a prime (18213324739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254059 + ... + 317761.

It is an arithmetic number, because the mean of its divisors is an integer number (2049102864).

Almost surely, 2^18213324730 is an apocalyptic number.

18213324730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18213324730 is a deficient number, since it is larger than the sum of its proper divisors (14572321094).

18213324730 is a wasteful number, since it uses less digits than its factorization.

18213324730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92301.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 18213324730 in words is "eighteen billion, two hundred thirteen million, three hundred twenty-four thousand, seven hundred thirty".