19980138200 has 48 divisors (see below), whose sum is σ = 50676901560. Its totient is φ = 7265504000.

The previous prime is 19980138151. The next prime is 19980138253. The reversal of 19980138200 is 283108991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4538741 + ... + 4543140.

Almost surely, 2^19980138200 is an apocalyptic number.

19980138200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19980138200 is an abundant number, since it is smaller than the sum of its proper divisors (30696763360).

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

19980138200 is a wasteful number, since it uses less digits than its factorization.

19980138200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081908 (or 9081899 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The spelling of 19980138200 in words is "nineteen billion, nine hundred eighty million, one hundred thirty-eight thousand, two hundred".