196415761 has 2 divisors, whose sum is σ = 196415762. Its totient is φ = 196415760.

The previous prime is 196415759. The next prime is 196415777. The reversal of 196415761 is 167514691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195300625 + 1115136 = 13975^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 196415761 - 2¹ = 196415759 is a prime.

Together with 196415759, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (196415741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98207880 + 98207881.

It is an arithmetic number, because the mean of its divisors is an integer number (98207881).

Almost surely, 2^196415761 is an apocalyptic number.

It is an amenable number.

196415761 is a deficient number, since it is larger than the sum of its proper divisors (1).

196415761 is an equidigital number, since it uses as much as digits as its factorization.

196415761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 196415761 is about 14014.8407411572. The cubic root of 196415761 is about 581.2890088900.

The spelling of 196415761 in words is "one hundred ninety-six million, four hundred fifteen thousand, seven hundred sixty-one".