19749676854 has 8 divisors (see below), whose sum is σ = 39499353720. Its totient is φ = 6583225616.

The previous prime is 19749676841. The next prime is 19749676861. The reversal of 19749676854 is 45867694791.

It is a sphenic number, since it is the product of 3 distinct primes.

19749676854 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645806399 + ... + 1645806410.

It is an arithmetic number, because the mean of its divisors is an integer number (4937419215).

Almost surely, 2^19749676854 is an apocalyptic number.

19749676854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19749676854 is a wasteful number, since it uses less digits than its factorization.

19749676854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291612814.

The product of its digits is 91445760, while the sum is 66.

The spelling of 19749676854 in words is "nineteen billion, seven hundred forty-nine million, six hundred seventy-six thousand, eight hundred fifty-four".