196486957 has 2 divisors, whose sum is σ = 196486958. Its totient is φ = 196486956.

The previous prime is 196486943. The next prime is 196486963. The reversal of 196486957 is 759684691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186431716 + 10055241 = 13654^2 + 3171^2 .

It is an emirp because it is prime and its reverse (759684691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196486957 - 2²³ = 188098349 is a prime.

It is a super-2 number, since 2×196486957² = 77214248542239698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 196486898 and 196486907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196486987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98243478 + 98243479.

It is an arithmetic number, because the mean of its divisors is an integer number (98243479).

Almost surely, 2^196486957 is an apocalyptic number.

It is an amenable number.

196486957 is a deficient number, since it is larger than the sum of its proper divisors (1).

196486957 is an equidigital number, since it uses as much as digits as its factorization.

196486957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The square root of 196486957 is about 14017.3805327529. The cubic root of 196486957 is about 581.3592348445.

The spelling of 196486957 in words is "one hundred ninety-six million, four hundred eighty-six thousand, nine hundred fifty-seven".