196494337261 has 2 divisors, whose sum is σ = 196494337262. Its totient is φ = 196494337260.

The previous prime is 196494337243. The next prime is 196494337283. The reversal of 196494337261 is 162733494691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99181534761 + 97312802500 = 314931^2 + 311950^2 .

It is an emirp because it is prime and its reverse (162733494691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196494337261 - 2³⁷ = 59055383789 is a prime.

It is a super-2 number, since 2×196494337261² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196494337201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98247168630 + 98247168631.

It is an arithmetic number, because the mean of its divisors is an integer number (98247168631).

Almost surely, 2^196494337261 is an apocalyptic number.

It is an amenable number.

196494337261 is a deficient number, since it is larger than the sum of its proper divisors (1).

196494337261 is an equidigital number, since it uses as much as digits as its factorization.

196494337261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 55.

The spelling of 196494337261 in words is "one hundred ninety-six billion, four hundred ninety-four million, three hundred thirty-seven thousand, two hundred sixty-one".