18426345 has 32 divisors (see below), whose sum is σ = 34013952. Its totient is φ = 8343552.

The previous prime is 18426337. The next prime is 18426347. The reversal of 18426345 is 54362481.

It is not a de Polignac number, because 18426345 - 2³ = 18426337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18426347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11089 + ... + 12641.

It is an arithmetic number, because the mean of its divisors is an integer number (1062936).

Almost surely, 2^18426345 is an apocalyptic number.

18426345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18426345 is a deficient number, since it is larger than the sum of its proper divisors (15587607).

18426345 is a wasteful number, since it uses less digits than its factorization.

18426345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its digits is 23040, while the sum is 33.

The square root of 18426345 is about 4292.5918743808. The cubic root of 18426345 is about 264.1271626828.

The spelling of 18426345 in words is "eighteen million, four hundred twenty-six thousand, three hundred forty-five".