18002079 has 24 divisors (see below), whose sum is σ = 26858832. Its totient is φ = 11612160.

The previous prime is 18002059. The next prime is 18002111. The reversal of 18002079 is 97020081.

It is not a de Polignac number, because 18002079 - 2⁹ = 18001567 is a prime.

18002079 is a modest number, since divided by 2079 gives 18 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18002009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69919 + ... + 70175.

It is an arithmetic number, because the mean of its divisors is an integer number (1119118).

Almost surely, 2^18002079 is an apocalyptic number.

18002079 is a deficient number, since it is larger than the sum of its proper divisors (8856753).

18002079 is a wasteful number, since it uses less digits than its factorization.

18002079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 18002079 is about 4242.8856925446. The cubic root of 18002079 is about 262.0842288868.

The spelling of 18002079 in words is "eighteen million, two thousand, seventy-nine".