196115965 has 4 divisors (see below), whose sum is σ = 235339164. Its totient is φ = 156892768.

The previous prime is 196115957. The next prime is 196115971. The reversal of 196115965 is 569511691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 134304921 + 61811044 = 11589^2 + 7862^2 .

It is a cyclic number.

It is not a de Polignac number, because 196115965 - 2³ = 196115957 is a prime.

It is a super-2 number, since 2×196115965² = 76922943455762450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19611592 + ... + 19611601.

It is an arithmetic number, because the mean of its divisors is an integer number (58834791).

Almost surely, 2^196115965 is an apocalyptic number.

It is an amenable number.

196115965 is a deficient number, since it is larger than the sum of its proper divisors (39223199).

196115965 is an equidigital number, since it uses as much as digits as its factorization.

196115965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39223198.

The product of its digits is 72900, while the sum is 43.

The square root of 196115965 is about 14004.1409947201. The cubic root of 196115965 is about 580.9931112868.

The spelling of 196115965 in words is "one hundred ninety-six million, one hundred fifteen thousand, nine hundred sixty-five".