19774932212 has 48 divisors (see below), whose sum is σ = 40170961152. Its totient is φ = 8342261760.

The previous prime is 19774932197. The next prime is 19774932223. The reversal of 19774932212 is 21223947791.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1290548 + ... + 1305780.

It is an arithmetic number, because the mean of its divisors is an integer number (836895024).

Almost surely, 2^19774932212 is an apocalyptic number.

It is an amenable number.

19774932212 is an abundant number, since it is smaller than the sum of its proper divisors (20396028940).

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

19774932212 is a wasteful number, since it uses less digits than its factorization.

19774932212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15968 (or 15966 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The spelling of 19774932212 in words is "nineteen billion, seven hundred seventy-four million, nine hundred thirty-two thousand, two hundred twelve".