196117815 has 16 divisors (see below), whose sum is σ = 314234208. Its totient is φ = 104447616.

The previous prime is 196117783. The next prime is 196117841. The reversal of 196117815 is 518711691.

196117815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 196117815 - 2⁵ = 196117783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077 + ... + 19913.

It is an arithmetic number, because the mean of its divisors is an integer number (19639638).

Almost surely, 2^196117815 is an apocalyptic number.

196117815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

196117815 is a deficient number, since it is larger than the sum of its proper divisors (118116393).

196117815 is a wasteful number, since it uses less digits than its factorization.

196117815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18578.

The product of its digits is 15120, while the sum is 39.

The square root of 196117815 is about 14004.2070464557. The cubic root of 196117815 is about 580.9949381547.

The spelling of 196117815 in words is "one hundred ninety-six million, one hundred seventeen thousand, eight hundred fifteen".