491773603 has 16 divisors (see below), whose sum is σ = 548660736. Its totient is φ = 438387840.

The previous prime is 491773571. The next prime is 491773663. The reversal of 491773603 is 306377194.

It is not a de Polignac number, because 491773603 - 2⁵ = 491773571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491773663) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 34168 + ... + 46378.

It is an arithmetic number, because the mean of its divisors is an integer number (34291296).

Almost surely, 2^491773603 is an apocalyptic number.

491773603 is a deficient number, since it is larger than the sum of its proper divisors (56887133).

491773603 is a wasteful number, since it uses less digits than its factorization.

491773603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12354.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 491773603 is about 22175.9690430881. The cubic root of 491773603 is about 789.3235693511.

The spelling of 491773603 in words is "four hundred ninety-one million, seven hundred seventy-three thousand, six hundred three".