491373798 has 8 divisors (see below), whose sum is σ = 982747608. Its totient is φ = 163791264.

The previous prime is 491373761. The next prime is 491373809. The reversal of 491373798 is 897373194.

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

491373798 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 491373798.

It is a congruent number.

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, 40947811 + ... + 40947822.

It is an arithmetic number, because the mean of its divisors is an integer number (122843451).

Almost surely, 2^491373798 is an apocalyptic number.

491373798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491373798 is a wasteful number, since it uses less digits than its factorization.

491373798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81895638.

The product of its digits is 1143072, while the sum is 51.

The square root of 491373798 is about 22166.9528352455. The cubic root of 491373798 is about 789.1096083835.

The spelling of 491373798 in words is "four hundred ninety-one million, three hundred seventy-three thousand, seven hundred ninety-eight".