1491675799 has 2 divisors, whose sum is σ = 1491675800. Its totient is φ = 1491675798.

The previous prime is 1491675781. The next prime is 1491675839. The reversal of 1491675799 is 9975761941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1491675799 - 2⁷ = 1491675671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491675299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745837899 + 745837900.

It is an arithmetic number, because the mean of its divisors is an integer number (745837900).

Almost surely, 2^1491675799 is an apocalyptic number.

1491675799 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491675799 is an equidigital number, since it uses as much as digits as its factorization.

1491675799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4286520, while the sum is 58.

The square root of 1491675799 is about 38622.2189807888. The cubic root of 1491675799 is about 1142.5927953013.

The spelling of 1491675799 in words is "one billion, four hundred ninety-one million, six hundred seventy-five thousand, seven hundred ninety-nine".