18423610451 has 16 divisors (see below), whose sum is σ = 19132375680. Its totient is φ = 17729046720.

The previous prime is 18423610421. The next prime is 18423610459. The reversal of 18423610451 is 15401632481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18423610451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18423610459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074536 + ... + 1091546.

It is an arithmetic number, because the mean of its divisors is an integer number (1195773480).

Almost surely, 2^18423610451 is an apocalyptic number.

18423610451 is a deficient number, since it is larger than the sum of its proper divisors (708765229).

18423610451 is a wasteful number, since it uses less digits than its factorization.

18423610451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17426.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 18423610451 in words is "eighteen billion, four hundred twenty-three million, six hundred ten thousand, four hundred fifty-one".