196193687 has 2 divisors, whose sum is σ = 196193688. Its totient is φ = 196193686.

The previous prime is 196193659. The next prime is 196193713. The reversal of 196193687 is 786391691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196193687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196193287) 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 as a sum of consecutive naturals, namely, 98096843 + 98096844.

It is an arithmetic number, because the mean of its divisors is an integer number (98096844).

Almost surely, 2^196193687 is an apocalyptic number.

196193687 is a deficient number, since it is larger than the sum of its proper divisors (1).

196193687 is an equidigital number, since it uses as much as digits as its factorization.

196193687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The square root of 196193687 is about 14006.9156847609. The cubic root of 196193687 is about 581.0698515677.

The spelling of 196193687 in words is "one hundred ninety-six million, one hundred ninety-three thousand, six hundred eighty-seven".