18406079 has 8 divisors (see below), whose sum is σ = 19693680. Its totient is φ = 17150400.

The previous prime is 18406051. The next prime is 18406099. The reversal of 18406079 is 97060481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18406079 - 2¹² = 18401983 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 (18406009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6782 + ... + 9099.

It is an arithmetic number, because the mean of its divisors is an integer number (2461710).

Almost surely, 2^18406079 is an apocalyptic number.

18406079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18406079 is a deficient number, since it is larger than the sum of its proper divisors (1287601).

18406079 is a wasteful number, since it uses less digits than its factorization.

18406079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15961.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18406079 is about 4290.2306464804. The cubic root of 18406079 is about 264.0302947711.

The spelling of 18406079 in words is "eighteen million, four hundred six thousand, seventy-nine".