19429207197 has 32 divisors (see below), whose sum is σ = 28741236480. Its totient is φ = 11612282880.

The previous prime is 19429207183. The next prime is 19429207219. The reversal of 19429207197 is 79170292491.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-19429207197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19429207097) 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, 248329 + ... + 317057.

It is an arithmetic number, because the mean of its divisors is an integer number (898163640).

Almost surely, 2^19429207197 is an apocalyptic number.

19429207197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19429207197 is a deficient number, since it is larger than the sum of its proper divisors (9312029283).

19429207197 is a wasteful number, since it uses less digits than its factorization.

19429207197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69013.

The product of its (nonzero) digits is 571536, while the sum is 51.

The spelling of 19429207197 in words is "nineteen billion, four hundred twenty-nine million, two hundred seven thousand, one hundred ninety-seven".