491118059 has 2 divisors, whose sum is σ = 491118060. Its totient is φ = 491118058.

The previous prime is 491118053. The next prime is 491118071. The reversal of 491118059 is 950811194.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491118059 is a prime.

It is not a weakly prime, because it can be changed into another prime (491118053) 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 as a sum of consecutive naturals, namely, 245559029 + 245559030.

It is an arithmetic number, because the mean of its divisors is an integer number (245559030).

Almost surely, 2^491118059 is an apocalyptic number.

491118059 is a deficient number, since it is larger than the sum of its proper divisors (1).

491118059 is an equidigital number, since it uses as much as digits as its factorization.

491118059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 491118059 is about 22161.1836100873. The cubic root of 491118059 is about 788.9726853841.

The spelling of 491118059 in words is "four hundred ninety-one million, one hundred eighteen thousand, fifty-nine".