18342379 has 4 divisors (see below), whose sum is σ = 20009880. Its totient is φ = 16674880.

The previous prime is 18342367. The next prime is 18342403. The reversal of 18342379 is 97324381.

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 18342379 - 2⁷ = 18342251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18342319) 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, 833734 + ... + 833755.

It is an arithmetic number, because the mean of its divisors is an integer number (5002470).

Almost surely, 2^18342379 is an apocalyptic number.

18342379 is a deficient number, since it is larger than the sum of its proper divisors (1667501).

18342379 is a wasteful number, since it uses less digits than its factorization.

18342379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667500.

The product of its digits is 36288, while the sum is 37.

The square root of 18342379 is about 4282.8003689175. The cubic root of 18342379 is about 263.7253562174.

It can be divided in two parts, 18342 and 379, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 18342379 in words is "eighteen million, three hundred forty-two thousand, three hundred seventy-nine".