19747219422 has 48 divisors (see below), whose sum is σ = 48360551040. Its totient is φ = 5345110512.

The previous prime is 19747219409. The next prime is 19747219439. The reversal of 19747219422 is 22491274791.

It is a super-2 number, since 2×19747219422² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1761978 + ... + 1773149.

It is an arithmetic number, because the mean of its divisors is an integer number (1007511480).

Almost surely, 2^19747219422 is an apocalyptic number.

19747219422 is an abundant number, since it is smaller than the sum of its proper divisors (28613331618).

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

19747219422 is a wasteful number, since it uses less digits than its factorization.

19747219422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535165 (or 3535158 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The spelling of 19747219422 in words is "nineteen billion, seven hundred forty-seven million, two hundred nineteen thousand, four hundred twenty-two".