196447913 has 2 divisors, whose sum is σ = 196447914. Its totient is φ = 196447912.

The previous prime is 196447873. The next prime is 196447931. The reversal of 196447913 is 319744691.

Together with next prime (196447931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123721129 + 72726784 = 11123^2 + 8528^2 .

It is a cyclic number.

It is not a de Polignac number, because 196447913 - 2¹⁰ = 196446889 is a prime.

It is not a weakly prime, because it can be changed into another prime (196447813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98223956 + 98223957.

It is an arithmetic number, because the mean of its divisors is an integer number (98223957).

Almost surely, 2^196447913 is an apocalyptic number.

It is an amenable number.

196447913 is a deficient number, since it is larger than the sum of its proper divisors (1).

196447913 is an equidigital number, since it uses as much as digits as its factorization.

196447913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 196447913 is about 14015.9877639787. The cubic root of 196447913 is about 581.3207249201.

The spelling of 196447913 in words is "one hundred ninety-six million, four hundred forty-seven thousand, nine hundred thirteen".