19274647434 has 32 divisors (see below), whose sum is σ = 44174486400. Its totient is φ = 5492273472.

The previous prime is 19274647433. The next prime is 19274647453. The reversal of 19274647434 is 43474647291.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19274647433) 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, 599509 + ... + 630840.

It is an arithmetic number, because the mean of its divisors is an integer number (1380452700).

Almost surely, 2^19274647434 is an apocalyptic number.

19274647434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19274647434 is an abundant number, since it is smaller than the sum of its proper divisors (24899838966).

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

19274647434 is a wasteful number, since it uses less digits than its factorization.

19274647434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230734.

The product of its digits is 4064256, while the sum is 51.

The spelling of 19274647434 in words is "nineteen billion, two hundred seventy-four million, six hundred forty-seven thousand, four hundred thirty-four".