19674887847 has 32 divisors (see below), whose sum is σ = 28198437120. Its totient is φ = 12164256000.

The previous prime is 19674887821. The next prime is 19674887857. The reversal of 19674887847 is 74878847691.

It is not a de Polignac number, because 19674887847 - 2⁷ = 19674887719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19674887807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1373472 + ... + 1387722.

It is an arithmetic number, because the mean of its divisors is an integer number (881201160).

Almost surely, 2^19674887847 is an apocalyptic number.

19674887847 is a deficient number, since it is larger than the sum of its proper divisors (8523549273).

19674887847 is a wasteful number, since it uses less digits than its factorization.

19674887847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14783.

The product of its digits is 151732224, while the sum is 69.

The spelling of 19674887847 in words is "nineteen billion, six hundred seventy-four million, eight hundred eighty-seven thousand, eight hundred forty-seven".