491001283195 has 4 divisors (see below), whose sum is σ = 589201539840. Its totient is φ = 392801026552.

The previous prime is 491001283189. The next prime is 491001283207. The reversal of 491001283195 is 591382100194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491001283195 - 2¹⁵ = 491001250427 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49100128315 + ... + 49100128324.

It is an arithmetic number, because the mean of its divisors is an integer number (147300384960).

Almost surely, 2^491001283195 is an apocalyptic number.

491001283195 is a deficient number, since it is larger than the sum of its proper divisors (98200256645).

491001283195 is an equidigital number, since it uses as much as digits as its factorization.

491001283195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98200256644.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 491001283195 in words is "four hundred ninety-one billion, one million, two hundred eighty-three thousand, one hundred ninety-five".