18629423 has 4 divisors (see below), whose sum is σ = 18645480. Its totient is φ = 18613368.

The previous prime is 18629411. The next prime is 18629431. The reversal of 18629423 is 32492681.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18629423 - 2⁴ = 18629407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18629473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6140 + ... + 8657.

It is an arithmetic number, because the mean of its divisors is an integer number (4661370).

Almost surely, 2^18629423 is an apocalyptic number.

18629423 is a deficient number, since it is larger than the sum of its proper divisors (16057).

18629423 is a wasteful number, since it uses less digits than its factorization.

18629423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16056.

The product of its digits is 20736, while the sum is 35.

The square root of 18629423 is about 4316.1815300101. The cubic root of 18629423 is about 265.0939408254.

The spelling of 18629423 in words is "eighteen million, six hundred twenty-nine thousand, four hundred twenty-three".