18423364730 has 8 divisors (see below), whose sum is σ = 33162056532. Its totient is φ = 7369345888.

The previous prime is 18423364727. The next prime is 18423364733. The reversal of 18423364730 is 3746332481.

It is an interprime number because it is at equal distance from previous prime (18423364727) and next prime (18423364733).

It can be written as a sum of positive squares in 2 ways, for example, as 18416389849 + 6974881 = 135707^2 + 2641^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18423364733) 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 3 ways as a sum of consecutive naturals, for example, 921168227 + ... + 921168246.

Almost surely, 2^18423364730 is an apocalyptic number.

18423364730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18423364730 is a deficient number, since it is larger than the sum of its proper divisors (14738691802).

18423364730 is a wasteful number, since it uses less digits than its factorization.

18423364730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842336480.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 18423364730 in words is "eighteen billion, four hundred twenty-three million, three hundred sixty-four thousand, seven hundred thirty".