491437502 has 16 divisors (see below), whose sum is σ = 749373072. Its totient is φ = 241678080.

The previous prime is 491437493. The next prime is 491437511. The reversal of 491437502 is 205734194.

It is an interprime number because it is at equal distance from previous prime (491437493) and next prime (491437511).

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 7 ways as a sum of consecutive naturals, for example, 23852 + ... + 39392.

It is an arithmetic number, because the mean of its divisors is an integer number (46835817).

Almost surely, 2^491437502 is an apocalyptic number.

491437502 is a deficient number, since it is larger than the sum of its proper divisors (257935570).

491437502 is a wasteful number, since it uses less digits than its factorization.

491437502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15803.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 491437502 is about 22168.3897024570. The cubic root of 491437502 is about 789.1437081981.

The spelling of 491437502 in words is "four hundred ninety-one million, four hundred thirty-seven thousand, five hundred two".