491130407 has 2 divisors, whose sum is σ = 491130408. Its totient is φ = 491130406.

The previous prime is 491130389. The next prime is 491130433. The reversal of 491130407 is 704031194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491130407 - 2⁸ = 491130151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 491130407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491136407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245565203 + 245565204.

It is an arithmetic number, because the mean of its divisors is an integer number (245565204).

Almost surely, 2^491130407 is an apocalyptic number.

491130407 is a deficient number, since it is larger than the sum of its proper divisors (1).

491130407 is an equidigital number, since it uses as much as digits as its factorization.

491130407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 491130407 is about 22161.4622035641. The cubic root of 491130407 is about 788.9792976117.

The spelling of 491130407 in words is "four hundred ninety-one million, one hundred thirty thousand, four hundred seven".