196052491 has 4 divisors (see below), whose sum is σ = 196894152. Its totient is φ = 195210832.

The previous prime is 196052477. The next prime is 196052497. The reversal of 196052491 is 194250691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 194250691 = 127 ⋅1529533.

It is a cyclic number.

It is not a de Polignac number, because 196052491 - 2²¹ = 193955339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 196052491.

It is not an unprimeable number, because it can be changed into a prime (196052497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420481 + ... + 420946.

It is an arithmetic number, because the mean of its divisors is an integer number (49223538).

Almost surely, 2^196052491 is an apocalyptic number.

196052491 is a deficient number, since it is larger than the sum of its proper divisors (841661).

196052491 is an equidigital number, since it uses as much as digits as its factorization.

196052491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841660.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 196052491 is about 14001.8745530732. The cubic root of 196052491 is about 580.9304239953.

The spelling of 196052491 in words is "one hundred ninety-six million, fifty-two thousand, four hundred ninety-one".