197888632339 has 4 divisors (see below), whose sum is σ = 204272136640. Its totient is φ = 191505128040.

The previous prime is 197888632327. The next prime is 197888632367. The reversal of 197888632339 is 933236888791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933236888791 = 19 ⋅49117730989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197888632339 is a prime.

It is a super-2 number, since 2×197888632339² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197888632309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191752104 + ... + 3191752165.

It is an arithmetic number, because the mean of its divisors is an integer number (51068034160).

Almost surely, 2^197888632339 is an apocalyptic number.

197888632339 is a deficient number, since it is larger than the sum of its proper divisors (6383504301).

197888632339 is an equidigital number, since it uses as much as digits as its factorization.

197888632339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383504300.

The product of its digits is 94058496, while the sum is 67.

The spelling of 197888632339 in words is "one hundred ninety-seven billion, eight hundred eighty-eight million, six hundred thirty-two thousand, three hundred thirty-nine".