19722342192 has 160 divisors (see below), whose sum is σ = 62817265152. Its totient is φ = 5203341312.

The previous prime is 19722342163. The next prime is 19722342193. The reversal of 19722342192 is 29124322791.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (19722342193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270163 + ... + 335309.

Almost surely, 2^19722342192 is an apocalyptic number.

19722342192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19722342192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31408632576).

19722342192 is an abundant number, since it is smaller than the sum of its proper divisors (43094922960).

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

19722342192 is a wasteful number, since it uses less digits than its factorization.

19722342192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65235 (or 65229 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The spelling of 19722342192 in words is "nineteen billion, seven hundred twenty-two million, three hundred forty-two thousand, one hundred ninety-two".