18980371 has 8 divisors (see below), whose sum is σ = 19576080. Its totient is φ = 18389088.

The previous prime is 18980341. The next prime is 18980383. The reversal of 18980371 is 17308981.

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 18980371 - 2¹³ = 18972179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 18980371.

It is not an unprimeable number, because it can be changed into a prime (18980321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9000 + ... + 10906.

It is an arithmetic number, because the mean of its divisors is an integer number (2447010).

Almost surely, 2^18980371 is an apocalyptic number.

18980371 is a deficient number, since it is larger than the sum of its proper divisors (595709).

18980371 is a wasteful number, since it uses less digits than its factorization.

18980371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 18980371 is about 4356.6467609849. The cubic root of 18980371 is about 266.7482418833.

The spelling of 18980371 in words is "eighteen million, nine hundred eighty thousand, three hundred seventy-one".