491493022 has 4 divisors (see below), whose sum is σ = 737239536. Its totient is φ = 245746510.

The previous prime is 491492993. The next prime is 491493097. The reversal of 491493022 is 220394194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 220394194 = 2 ⋅110197097.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122873254 + ... + 122873257.

It is an arithmetic number, because the mean of its divisors is an integer number (184309884).

Almost surely, 2^491493022 is an apocalyptic number.

491493022 is a deficient number, since it is larger than the sum of its proper divisors (245746514).

491493022 is a wasteful number, since it uses less digits than its factorization.

491493022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245746513.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 491493022 is about 22169.6419005811. The cubic root of 491493022 is about 789.1734248347.

The spelling of 491493022 in words is "four hundred ninety-one million, four hundred ninety-three thousand, twenty-two".