196386251 has 2 divisors, whose sum is σ = 196386252. Its totient is φ = 196386250.

The previous prime is 196386247. The next prime is 196386277. The reversal of 196386251 is 152683691.

It is a weak prime.

It is an emirp because it is prime and its reverse (152683691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196386251 - 2² = 196386247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 196386199 and 196386208.

It is not a weakly prime, because it can be changed into another prime (196386551) 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, 98193125 + 98193126.

It is an arithmetic number, because the mean of its divisors is an integer number (98193126).

Almost surely, 2^196386251 is an apocalyptic number.

196386251 is a deficient number, since it is larger than the sum of its proper divisors (1).

196386251 is an equidigital number, since it uses as much as digits as its factorization.

196386251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 196386251 is about 14013.7878890755. The cubic root of 196386251 is about 581.2598959891.

The spelling of 196386251 in words is "one hundred ninety-six million, three hundred eighty-six thousand, two hundred fifty-one".