1491443419 has 2 divisors, whose sum is σ = 1491443420. Its totient is φ = 1491443418.

The previous prime is 1491443417. The next prime is 1491443461. The reversal of 1491443419 is 9143441941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1491443419 - 2¹ = 1491443417 is a prime.

It is a super-2 number, since 2×1491443419² = 4448806944156819122, which contains 22 as substring.

Together with 1491443417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1491443413) 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, 745721709 + 745721710.

It is an arithmetic number, because the mean of its divisors is an integer number (745721710).

Almost surely, 2^1491443419 is an apocalyptic number.

1491443419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491443419 is an equidigital number, since it uses as much as digits as its factorization.

1491443419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 1491443419 is about 38619.2104916711. The cubic root of 1491443419 is about 1142.5334594628.

The spelling of 1491443419 in words is "one billion, four hundred ninety-one million, four hundred forty-three thousand, four hundred nineteen".