20189830980 has 48 divisors (see below), whose sum is σ = 61670758464. Its totient is φ = 4894504320.

The previous prime is 20189830967. The next prime is 20189830981. The reversal of 20189830980 is 8903898102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20189830981) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15294667 + ... + 15295986.

It is an arithmetic number, because the mean of its divisors is an integer number (1284807468).

Almost surely, 2^20189830980 is an apocalyptic number.

20189830980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20189830980 is an abundant number, since it is smaller than the sum of its proper divisors (41480927484).

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

20189830980 is a wasteful number, since it uses less digits than its factorization.

20189830980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30590676 (or 30590674 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 48.

The spelling of 20189830980 in words is "twenty billion, one hundred eighty-nine million, eight hundred thirty thousand, nine hundred eighty".