18980003945 has 8 divisors (see below), whose sum is σ = 26029719744. Its totient is φ = 13014859824.

The previous prime is 18980003909. The next prime is 18980003953. The reversal of 18980003945 is 54930008981.

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 18980003945 - 2¹² = 18979999849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18980003945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271142879 + ... + 271142948.

It is an arithmetic number, because the mean of its divisors is an integer number (3253714968).

Almost surely, 2^18980003945 is an apocalyptic number.

It is an amenable number.

18980003945 is a deficient number, since it is larger than the sum of its proper divisors (7049715799).

18980003945 is an equidigital number, since it uses as much as digits as its factorization.

18980003945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542285839.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 18980003945 in words is "eighteen billion, nine hundred eighty million, three thousand, nine hundred forty-five".