18980003933 has 4 divisors (see below), whose sum is σ = 20705458848. Its totient is φ = 17254549020.

The previous prime is 18980003909. The next prime is 18980003953. The reversal of 18980003933 is 33930008981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18980003933 - 2¹⁴ = 18979987549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18980003953) 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, 862727441 + ... + 862727462.

It is an arithmetic number, because the mean of its divisors is an integer number (5176364712).

Almost surely, 2^18980003933 is an apocalyptic number.

It is an amenable number.

18980003933 is a deficient number, since it is larger than the sum of its proper divisors (1725454915).

18980003933 is a wasteful number, since it uses less digits than its factorization.

18980003933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725454914.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 18980003933 in words is "eighteen billion, nine hundred eighty million, three thousand, nine hundred thirty-three".