196239865 has 8 divisors (see below), whose sum is σ = 235686528. Its totient is φ = 156859440.

The previous prime is 196239859. The next prime is 196239893. The reversal of 196239865 is 568932691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196239865 - 2⁵ = 196239833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9787 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (29460816).

Almost surely, 2^196239865 is an apocalyptic number.

It is an amenable number.

196239865 is a deficient number, since it is larger than the sum of its proper divisors (39446663).

196239865 is a wasteful number, since it uses less digits than its factorization.

196239865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33119.

The product of its digits is 699840, while the sum is 49.

The square root of 196239865 is about 14008.5639877898. The cubic root of 196239865 is about 581.1154366884.

The spelling of 196239865 in words is "one hundred ninety-six million, two hundred thirty-nine thousand, eight hundred sixty-five".