19692829197 has 6 divisors (see below), whose sum is σ = 28445197742. Its totient is φ = 13128552792.

The previous prime is 19692829193. The next prime is 19692829213. The reversal of 19692829197 is 79192829691.

It can be written as a sum of positive squares in only one way, i.e., 19096199721 + 596629476 = 138189^2 + 24426^2 .

It is not a de Polignac number, because 19692829197 - 2² = 19692829193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19692829193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1094046058 + ... + 1094046075.

Almost surely, 2^19692829197 is an apocalyptic number.

It is an amenable number.

19692829197 is a deficient number, since it is larger than the sum of its proper divisors (8752368545).

19692829197 is a wasteful number, since it uses less digits than its factorization.

19692829197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188092139 (or 2188092136 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The spelling of 19692829197 in words is "nineteen billion, six hundred ninety-two million, eight hundred twenty-nine thousand, one hundred ninety-seven".