491308420654 has 8 divisors (see below), whose sum is σ = 736967903688. Its totient is φ = 245652452760.

The previous prime is 491308420643. The next prime is 491308420679. The reversal of 491308420654 is 456024803194.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496017 + ... + 1108444.

It is an arithmetic number, because the mean of its divisors is an integer number (92120987961).

Almost surely, 2^491308420654 is an apocalyptic number.

491308420654 is a deficient number, since it is larger than the sum of its proper divisors (245659483034).

491308420654 is a wasteful number, since it uses less digits than its factorization.

491308420654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757570.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 491308420654 in words is "four hundred ninety-one billion, three hundred eight million, four hundred twenty thousand, six hundred fifty-four".