491692486 has 4 divisors (see below), whose sum is σ = 737538732. Its totient is φ = 245846242.

The previous prime is 491692463. The next prime is 491692517. The reversal of 491692486 is 684296194.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122923120 + ... + 122923123.

It is an arithmetic number, because the mean of its divisors is an integer number (184384683).

Almost surely, 2^491692486 is an apocalyptic number.

491692486 is a deficient number, since it is larger than the sum of its proper divisors (245846246).

491692486 is a wasteful number, since it uses less digits than its factorization.

491692486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245846245.

The product of its digits is 746496, while the sum is 49.

The square root of 491692486 is about 22174.1400284205. The cubic root of 491692486 is about 789.2801678886.

The spelling of 491692486 in words is "four hundred ninety-one million, six hundred ninety-two thousand, four hundred eighty-six".