18075379 has 4 divisors (see below), whose sum is σ = 20657584. Its totient is φ = 15493176.

The previous prime is 18075377. The next prime is 18075391. The reversal of 18075379 is 97357081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97357081 = 31 ⋅3140551.

It is a cyclic number.

It is not a de Polignac number, because 18075379 - 2¹ = 18075377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18075377) 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, 1291092 + ... + 1291105.

It is an arithmetic number, because the mean of its divisors is an integer number (5164396).

Almost surely, 2^18075379 is an apocalyptic number.

18075379 is a deficient number, since it is larger than the sum of its proper divisors (2582205).

18075379 is an equidigital number, since it uses as much as digits as its factorization.

18075379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582204.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 18075379 is about 4251.5149064775. The cubic root of 18075379 is about 262.4394611716.

The spelling of 18075379 in words is "eighteen million, seventy-five thousand, three hundred seventy-nine".