19929303900 has 324 divisors, whose sum is σ = 69409666872. Its totient is φ = 4743360000.

The previous prime is 19929303871. The next prime is 19929303913. The reversal of 19929303900 is 930392991.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 36837630 + ... + 36838170.

Almost surely, 2^19929303900 is an apocalyptic number.

19929303900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19929303900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34704833436).

19929303900 is an abundant number, since it is smaller than the sum of its proper divisors (49480362972).

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

19929303900 is a wasteful number, since it uses less digits than its factorization.

19929303900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The spelling of 19929303900 in words is "nineteen billion, nine hundred twenty-nine million, three hundred three thousand, nine hundred".