19469825878 has 4 divisors (see below), whose sum is σ = 29204738820. Its totient is φ = 9734912938.

The previous prime is 19469825867. The next prime is 19469825899. The reversal of 19469825878 is 87852896491.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4867456468 + ... + 4867456471.

It is an arithmetic number, because the mean of its divisors is an integer number (7301184705).

Almost surely, 2^19469825878 is an apocalyptic number.

19469825878 is a deficient number, since it is larger than the sum of its proper divisors (9734912942).

19469825878 is an equidigital number, since it uses as much as digits as its factorization.

19469825878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9734912941.

The product of its digits is 69672960, while the sum is 67.

The spelling of 19469825878 in words is "nineteen billion, four hundred sixty-nine million, eight hundred twenty-five thousand, eight hundred seventy-eight".