1019919792870 has 192 divisors, whose sum is σ = 2995656955200. Its totient is φ = 238484843520.

The previous prime is 1019919792847. The next prime is 1019919792917. The reversal of 1019919792870 is 782979199101.

It is a junction number, because it is equal to n+sod(n) for n = 1019919792798 and 1019919792807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29065696 + ... + 29100764.

It is an arithmetic number, because the mean of its divisors is an integer number (15602379975).

Almost surely, 2^{1019919792870} is an apocalyptic number.

1019919792870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1019919792870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1497828477600).

1019919792870 is an abundant number, since it is smaller than the sum of its proper divisors (1975737162330).

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

1019919792870 is a wasteful number, since it uses less digits than its factorization.

1019919792870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36135 (or 36132 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 63.

The spelling of 1019919792870 in words is "one trillion, nineteen billion, nine hundred nineteen million, seven hundred ninety-two thousand, eight hundred seventy".