1491346699 has 4 divisors (see below), whose sum is σ = 1497859360. Its totient is φ = 1484834040.

The previous prime is 1491346691. The next prime is 1491346741. The reversal of 1491346699 is 9966431941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1491346699 - 2³ = 1491346691 is a prime.

It is a super-2 number, since 2×1491346699² = 4448229953236393202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1491346691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255987 + ... + 3256444.

It is an arithmetic number, because the mean of its divisors is an integer number (374464840).

Almost surely, 2^1491346699 is an apocalyptic number.

1491346699 is a deficient number, since it is larger than the sum of its proper divisors (6512661).

1491346699 is an equidigital number, since it uses as much as digits as its factorization.

1491346699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512660.

The product of its digits is 1259712, while the sum is 52.

The square root of 1491346699 is about 38617.9582448373. The cubic root of 1491346699 is about 1142.5087611909.

The spelling of 1491346699 in words is "one billion, four hundred ninety-one million, three hundred forty-six thousand, six hundred ninety-nine".