491269670 has 16 divisors (see below), whose sum is σ = 890742528. Its totient is φ = 195072960.

The previous prime is 491269651. The next prime is 491269687. The reversal of 491269670 is 76962194.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 177926 + ... + 180665.

It is an arithmetic number, because the mean of its divisors is an integer number (55671408).

Almost surely, 2^491269670 is an apocalyptic number.

491269670 is a deficient number, since it is larger than the sum of its proper divisors (399472858).

491269670 is a wasteful number, since it uses less digits than its factorization.

491269670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358735.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 491269670 is about 22164.6039892438. The cubic root of 491269670 is about 789.0538638495.

The spelling of 491269670 in words is "four hundred ninety-one million, two hundred sixty-nine thousand, six hundred seventy".