19274909836 has 48 divisors (see below), whose sum is σ = 41640874240. Its totient is φ = 7602154560.

The previous prime is 19274909821. The next prime is 19274909837. The reversal of 19274909836 is 63890947291.

It is not an unprimeable number, because it can be changed into a prime (19274909837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40495 + ... + 200473.

Almost surely, 2^19274909836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19274909836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20820437120).

19274909836 is an abundant number, since it is smaller than the sum of its proper divisors (22365964404).

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

19274909836 is a wasteful number, since it uses less digits than its factorization.

19274909836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160334 (or 160332 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 19274909836 in words is "nineteen billion, two hundred seventy-four million, nine hundred nine thousand, eight hundred thirty-six".