18980319 has 8 divisors (see below), whose sum is σ = 25350832. Its totient is φ = 12631680.

The previous prime is 18980309. The next prime is 18980321. The reversal of 18980319 is 91308981.

It is a happy number.

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

It is not a de Polignac number, because 18980319 - 2⁵ = 18980287 is a prime.

It is a super-2 number, since 2×18980319² = 720505018683522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980309) 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, 3322 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (3168854).

Almost surely, 2^18980319 is an apocalyptic number.

18980319 is a deficient number, since it is larger than the sum of its proper divisors (6370513).

18980319 is a wasteful number, since it uses less digits than its factorization.

18980319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10937.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 18980319 is about 4356.6407930882. The cubic root of 18980319 is about 266.7479982821.

It can be divided in two parts, 189 and 80319, that added together give a palindrome (80508).

The spelling of 18980319 in words is "eighteen million, nine hundred eighty thousand, three hundred nineteen".