1491600959 has 2 divisors, whose sum is σ = 1491600960. Its totient is φ = 1491600958.

The previous prime is 1491600953. The next prime is 1491600973. The reversal of 1491600959 is 9590061941.

It is a weak prime.

It is an emirp because it is prime and its reverse (9590061941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1491600959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491600953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745800479 + 745800480.

It is an arithmetic number, because the mean of its divisors is an integer number (745800480).

Almost surely, 2^1491600959 is an apocalyptic number.

1491600959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491600959 is an equidigital number, since it uses as much as digits as its factorization.

1491600959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 1491600959 is about 38621.2500962877. The cubic root of 1491600959 is about 1142.5736863512.

The spelling of 1491600959 in words is "one billion, four hundred ninety-one million, six hundred thousand, nine hundred fifty-nine".