491825651942 has 8 divisors (see below), whose sum is σ = 737751104256. Its totient is φ = 245908617192.

The previous prime is 491825651923. The next prime is 491825651953. The reversal of 491825651942 is 249156528194.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956233 + ... + 2193284.

It is an arithmetic number, because the mean of its divisors is an integer number (92218888032).

Almost surely, 2^491825651942 is an apocalyptic number.

491825651942 is a deficient number, since it is larger than the sum of its proper divisors (245925452314).

491825651942 is a wasteful number, since it uses less digits than its factorization.

491825651942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208782.

The product of its digits is 6220800, while the sum is 56.

The spelling of 491825651942 in words is "four hundred ninety-one billion, eight hundred twenty-five million, six hundred fifty-one thousand, nine hundred forty-two".