19714228178 has 18 divisors (see below), whose sum is σ = 29897441157. Its totient is φ = 9749590600.

The previous prime is 19714228147. The next prime is 19714228231. The reversal of 19714228178 is 87182241791.

It can be written as a sum of positive squares in 2 ways, for example, as 13683618529 + 6030609649 = 116977^2 + 77657^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99283.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20054675 + ... + 20055657.

Almost surely, 2^19714228178 is an apocalyptic number.

19714228178 is a deficient number, since it is larger than the sum of its proper divisors (10183212979).

19714228178 is an frugal number, since it uses more digits than its factorization.

19714228178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170 (or 1086 counting only the distinct ones).

The product of its digits is 451584, while the sum is 50.

Multiplying 19714228178 by its sum of digits (50), we get a square (985711408900 = 992830²).

The spelling of 19714228178 in words is "nineteen billion, seven hundred fourteen million, two hundred twenty-eight thousand, one hundred seventy-eight".