19428197169 has 16 divisors (see below), whose sum is σ = 26169376640. Its totient is φ = 12819824640.

The previous prime is 19428197161. The next prime is 19428197197. The reversal of 19428197169 is 96179182491.

It is not a de Polignac number, because 19428197169 - 2³ = 19428197161 is a prime.

It is a super-2 number, since 2×19428197169² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19428197161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285489 + ... + 346929.

It is an arithmetic number, because the mean of its divisors is an integer number (1635586040).

Almost surely, 2^19428197169 is an apocalyptic number.

It is an amenable number.

19428197169 is a deficient number, since it is larger than the sum of its proper divisors (6741179471).

19428197169 is a wasteful number, since it uses less digits than its factorization.

19428197169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62520.

The product of its digits is 1959552, while the sum is 57.

The spelling of 19428197169 in words is "nineteen billion, four hundred twenty-eight million, one hundred ninety-seven thousand, one hundred sixty-nine".