19849014774 has 24 divisors (see below), whose sum is σ = 43386788952. Its totient is φ = 6557785920.

The previous prime is 19849014763. The next prime is 19849014793. The reversal of 19849014774 is 47741094891.

19849014774 is a `hidden beast` number, since 1 + 9 + 8 + 490 + 147 + 7 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 19849014774.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4877272 + ... + 4881339.

It is an arithmetic number, because the mean of its divisors is an integer number (1807782873).

Almost surely, 2^19849014774 is an apocalyptic number.

19849014774 is an abundant number, since it is smaller than the sum of its proper divisors (23537774178).

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

19849014774 is a wasteful number, since it uses less digits than its factorization.

19849014774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9758732 (or 9758729 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 19849014774 in words is "nineteen billion, eight hundred forty-nine million, fourteen thousand, seven hundred seventy-four".