19324892197 has 16 divisors (see below), whose sum is σ = 21535300080. Its totient is φ = 17218252800.

The previous prime is 19324892179. The next prime is 19324892203. The reversal of 19324892197 is 79129842391.

It is a happy number.

It is a Cunningham number, because it is equal to 139014²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 456847876 + 18868044321 = 21374^2 + 137361^2 .

It is a cyclic number.

It is not a de Polignac number, because 19324892197 - 2²⁷ = 19190674469 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 (19324892117) 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, 2046547 + ... + 2055967.

It is an arithmetic number, because the mean of its divisors is an integer number (1345956255).

Almost surely, 2^19324892197 is an apocalyptic number.

It is an amenable number.

19324892197 is a deficient number, since it is larger than the sum of its proper divisors (2210407883).

19324892197 is a wasteful number, since it uses less digits than its factorization.

19324892197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14904.

The product of its digits is 1959552, while the sum is 55.

The spelling of 19324892197 in words is "nineteen billion, three hundred twenty-four million, eight hundred ninety-two thousand, one hundred ninety-seven".