196615157 has 4 divisors (see below), whose sum is σ = 203395020. Its totient is φ = 189835296.

The previous prime is 196615127. The next prime is 196615169. The reversal of 196615157 is 751516691.

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 84805681 + 111809476 = 9209^2 + 10574^2 .

It is a cyclic number.

It is not a de Polignac number, because 196615157 - 2⁶ = 196615093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196615127) 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 in 3 ways as a sum of consecutive naturals, for example, 3389888 + ... + 3389945.

It is an arithmetic number, because the mean of its divisors is an integer number (50848755).

Almost surely, 2^196615157 is an apocalyptic number.

It is an amenable number.

196615157 is a deficient number, since it is larger than the sum of its proper divisors (6779863).

196615157 is an equidigital number, since it uses as much as digits as its factorization.

196615157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779862.

The product of its digits is 56700, while the sum is 41.

The square root of 196615157 is about 14021.9526814207. The cubic root of 196615157 is about 581.4856453564.

The spelling of 196615157 in words is "one hundred ninety-six million, six hundred fifteen thousand, one hundred fifty-seven".