19495134875 has 16 divisors (see below), whose sum is σ = 24728789280. Its totient is φ = 15340428000.

The previous prime is 19495134871. The next prime is 19495134929. The reversal of 19495134875 is 57843159491.

It is a happy number.

It is not a de Polignac number, because 19495134875 - 2² = 19495134871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19495134875.

It is not an unprimeable number, because it can be changed into a prime (19495134871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270745 + ... + 1285994.

It is an arithmetic number, because the mean of its divisors is an integer number (1545549330).

Almost surely, 2^19495134875 is an apocalyptic number.

19495134875 is a deficient number, since it is larger than the sum of its proper divisors (5233654405).

19495134875 is an equidigital number, since it uses as much as digits as its factorization.

19495134875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556815 (or 2556805 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 56.

The spelling of 19495134875 in words is "nineteen billion, four hundred ninety-five million, one hundred thirty-four thousand, eight hundred seventy-five".