19870929120 has 384 divisors, whose sum is σ = 74950686720. Its totient is φ = 4326727680.

The previous prime is 19870929109. The next prime is 19870929139. The reversal of 19870929120 is 2192907891.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 19870929120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30061590 + ... + 30062250.

It is an arithmetic number, because the mean of its divisors is an integer number (195184080).

Almost surely, 2^19870929120 is an apocalyptic number.

19870929120 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 19870929120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37475343360).

19870929120 is an abundant number, since it is smaller than the sum of its proper divisors (55079757600).

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

19870929120 is a wasteful number, since it uses less digits than its factorization.

19870929120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The spelling of 19870929120 in words is "nineteen billion, eight hundred seventy million, nine hundred twenty-nine thousand, one hundred twenty".