19142079705 has 64 divisors (see below), whose sum is σ = 40582840320. Its totient is φ = 8370191808.

The previous prime is 19142079689. The next prime is 19142079721. The reversal of 19142079705 is 50797024191.

19142079705 is a `hidden beast` number, since 1 + 91 + 420 + 79 + 70 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (19142079689) and next prime (19142079721).

It is not a de Polignac number, because 19142079705 - 2⁴ = 19142079689 is a prime.

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

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, 418617 + ... + 462086.

It is an arithmetic number, because the mean of its divisors is an integer number (634106880).

Almost surely, 2^19142079705 is an apocalyptic number.

19142079705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19142079705 is an abundant number, since it is smaller than the sum of its proper divisors (21440760615).

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

19142079705 is a wasteful number, since it uses less digits than its factorization.

19142079705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880747 (or 880741 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 19142079705 in words is "nineteen billion, one hundred forty-two million, seventy-nine thousand, seven hundred five".