196037861 has 2 divisors, whose sum is σ = 196037862. Its totient is φ = 196037860.

The previous prime is 196037843. The next prime is 196037867. The reversal of 196037861 is 168730691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146264836 + 49773025 = 12094^2 + 7055^2 .

It is a cyclic number.

It is not a de Polignac number, because 196037861 - 2¹⁰ = 196036837 is a prime.

It is equal to p_10871897 and since 196037861 and 10871897 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196037867) 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, 98018930 + 98018931.

It is an arithmetic number, because the mean of its divisors is an integer number (98018931).

Almost surely, 2^196037861 is an apocalyptic number.

It is an amenable number.

196037861 is a deficient number, since it is larger than the sum of its proper divisors (1).

196037861 is an equidigital number, since it uses as much as digits as its factorization.

196037861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 196037861 is about 14001.3521132782. The cubic root of 196037861 is about 580.9159734035.

The spelling of 196037861 in words is "one hundred ninety-six million, thirty-seven thousand, eight hundred sixty-one".