18980814 has 8 divisors (see below), whose sum is σ = 37961640. Its totient is φ = 6326936.

The previous prime is 18980813. The next prime is 18980839. The reversal of 18980814 is 41808981.

It is a happy number.

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

18980814 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980813) 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, 1581729 + ... + 1581740.

It is an arithmetic number, because the mean of its divisors is an integer number (4745205).

Almost surely, 2^18980814 is an apocalyptic number.

18980814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18980814 is a wasteful number, since it uses less digits than its factorization.

18980814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163474.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 18980814 is about 4356.6976025425. The cubic root of 18980814 is about 266.7503171598.

It can be divided in two parts, 189 and 80814, that added together give a triangular number (81003 = T₄₀₂).

The spelling of 18980814 in words is "eighteen million, nine hundred eighty thousand, eight hundred fourteen".