491922338 has 8 divisors (see below), whose sum is σ = 743269932. Its totient is φ = 244165696.

The previous prime is 491922337. The next prime is 491922349. The reversal of 491922338 is 833229194.

It can be written as a sum of positive squares in 2 ways, for example, as 447872569 + 44049769 = 21163^2 + 6637^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 491922295 and 491922304.

It is not an unprimeable number, because it can be changed into a prime (491922337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 897395 + ... + 897942.

Almost surely, 2^491922338 is an apocalyptic number.

491922338 is a deficient number, since it is larger than the sum of its proper divisors (251347594).

491922338 is a wasteful number, since it uses less digits than its factorization.

491922338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795476.

The product of its digits is 93312, while the sum is 41.

The square root of 491922338 is about 22179.3223070499. The cubic root of 491922338 is about 789.4031372706.

The spelling of 491922338 in words is "four hundred ninety-one million, nine hundred twenty-two thousand, three hundred thirty-eight".