18346423 has 4 divisors (see below), whose sum is σ = 18773128. Its totient is φ = 17919720.

The previous prime is 18346411. The next prime is 18346441. The reversal of 18346423 is 32464381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32464381 = 67 ⋅484543.

It is a cyclic number.

It is not a de Polignac number, because 18346423 - 2⁹ = 18345911 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 (18340423) 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, 213288 + ... + 213373.

It is an arithmetic number, because the mean of its divisors is an integer number (4693282).

Almost surely, 2^18346423 is an apocalyptic number.

18346423 is a deficient number, since it is larger than the sum of its proper divisors (426705).

18346423 is an equidigital number, since it uses as much as digits as its factorization.

18346423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426704.

The product of its digits is 13824, while the sum is 31.

The square root of 18346423 is about 4283.2724638995. The cubic root of 18346423 is about 263.7447362366.

It can be divided in two parts, 18346 and 423, that added together give a square (18769 = 137²).

The spelling of 18346423 in words is "eighteen million, three hundred forty-six thousand, four hundred twenty-three".