196143609157 has 2 divisors, whose sum is σ = 196143609158. Its totient is φ = 196143609156.

The previous prime is 196143609139. The next prime is 196143609197. The reversal of 196143609157 is 751906341691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196130293956 + 13315201 = 442866^2 + 3649^2 .

It is a cyclic number.

It is not a de Polignac number, because 196143609157 - 2⁷ = 196143609029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196143609197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98071804578 + 98071804579.

It is an arithmetic number, because the mean of its divisors is an integer number (98071804579).

Almost surely, 2^196143609157 is an apocalyptic number.

It is an amenable number.

196143609157 is a deficient number, since it is larger than the sum of its proper divisors (1).

196143609157 is an equidigital number, since it uses as much as digits as its factorization.

196143609157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 196143609157 in words is "one hundred ninety-six billion, one hundred forty-three million, six hundred nine thousand, one hundred fifty-seven".