19875235730 has 32 divisors (see below), whose sum is σ = 41080003200. Its totient is φ = 6782065920.

The previous prime is 19875235729. The next prime is 19875235759. The reversal of 19875235730 is 3753257891.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658055 + ... + 687594.

It is an arithmetic number, because the mean of its divisors is an integer number (1283750100).

Almost surely, 2^19875235730 is an apocalyptic number.

19875235730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19875235730 is an abundant number, since it is smaller than the sum of its proper divisors (21204767470).

19875235730 is a wasteful number, since it uses less digits than its factorization.

19875235730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345874.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 19875235730 in words is "nineteen billion, eight hundred seventy-five million, two hundred thirty-five thousand, seven hundred thirty".