19758474966 has 16 divisors (see below), whose sum is σ = 39533603184. Its totient is φ = 6583382784.

The previous prime is 19758474949. The next prime is 19758474973. The reversal of 19758474966 is 66947485791.

It is a junction number, because it is equal to n+sod(n) for n = 19758474897 and 19758474906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678435 + ... + 706958.

It is an arithmetic number, because the mean of its divisors is an integer number (2470850199).

Almost surely, 2^19758474966 is an apocalyptic number.

19758474966 is an abundant number, since it is smaller than the sum of its proper divisors (19775128218).

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

19758474966 is a wasteful number, since it uses less digits than its factorization.

19758474966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387775.

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

The spelling of 19758474966 in words is "nineteen billion, seven hundred fifty-eight million, four hundred seventy-four thousand, nine hundred sixty-six".