18079853 has 4 divisors (see below), whose sum is σ = 19723488. Its totient is φ = 16436220.

The previous prime is 18079843. The next prime is 18079871. The reversal of 18079853 is 35897081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18079853 - 2⁸ = 18079597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18079853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079843) 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, 821801 + ... + 821822.

It is an arithmetic number, because the mean of its divisors is an integer number (4930872).

Almost surely, 2^18079853 is an apocalyptic number.

It is an amenable number.

18079853 is a deficient number, since it is larger than the sum of its proper divisors (1643635).

18079853 is a wasteful number, since it uses less digits than its factorization.

18079853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643634.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 18079853 is about 4252.0410393128. The cubic root of 18079853 is about 262.4611123043.

The spelling of 18079853 in words is "eighteen million, seventy-nine thousand, eight hundred fifty-three".