196505291 has 8 divisors (see below), whose sum is σ = 200504160. Its totient is φ = 192517312.

The previous prime is 196505279. The next prime is 196505321. The reversal of 196505291 is 192505691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196505291 is a prime.

It is a super-2 number, since 2×196505291² = 77228658781989362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196505191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40586 + ... + 45168.

It is an arithmetic number, because the mean of its divisors is an integer number (25063020).

Almost surely, 2^196505291 is an apocalyptic number.

196505291 is a deficient number, since it is larger than the sum of its proper divisors (3998869).

196505291 is an equidigital number, since it uses as much as digits as its factorization.

196505291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 196505291 is about 14018.0344913258. The cubic root of 196505291 is about 581.3773162970.

The spelling of 196505291 in words is "one hundred ninety-six million, five hundred five thousand, two hundred ninety-one".