491220202022194 has 4 divisors (see below), whose sum is σ = 736830303033294. Its totient is φ = 245610101011096.

The previous prime is 491220202022177. The next prime is 491220202022233.

491220202022194 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in only one way, i.e., 376189493316025 + 115030708706169 = 19395605^2 + 10725237^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122805050505547 + ... + 122805050505550.

Almost surely, 2^{491220202022194} is an apocalyptic number.

491220202022194 is a deficient number, since it is larger than the sum of its proper divisors (245610101011100).

491220202022194 is a wasteful number, since it uses less digits than its factorization.

491220202022194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245610101011099.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 491220202022194 in words is "four hundred ninety-one trillion, two hundred twenty billion, two hundred two million, twenty-two thousand, one hundred ninety-four".