1434786809 has 2 divisors, whose sum is σ = 1434786810. Its totient is φ = 1434786808.

The previous prime is 1434786781. The next prime is 1434786823. The reversal of 1434786809 is 9086874341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104565225 + 330221584 = 33235^2 + 18172^2 .

It is an emirp because it is prime and its reverse (9086874341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1434786809 is a prime.

It is a super-2 number, since 2×1434786809² = 4117226374560804962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1434786209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717393404 + 717393405.

It is an arithmetic number, because the mean of its divisors is an integer number (717393405).

Almost surely, 2^1434786809 is an apocalyptic number.

It is an amenable number.

1434786809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1434786809 is an equidigital number, since it uses as much as digits as its factorization.

1434786809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 1434786809 is about 37878.5798176225. The cubic root of 1434786809 is about 1127.8788644900.

The spelling of 1434786809 in words is "one billion, four hundred thirty-four million, seven hundred eighty-six thousand, eight hundred nine".