1346912491 has 2 divisors, whose sum is σ = 1346912492. Its totient is φ = 1346912490.

The previous prime is 1346912473. The next prime is 1346912507. The reversal of 1346912491 is 1942196431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1346912491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1346912401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673456245 + 673456246.

It is an arithmetic number, because the mean of its divisors is an integer number (673456246).

Almost surely, 2^1346912491 is an apocalyptic number.

1346912491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346912491 is an equidigital number, since it uses as much as digits as its factorization.

1346912491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 1346912491 is about 36700.3064156146. The cubic root of 1346912491 is about 1104.3662523511.

The spelling of 1346912491 in words is "one billion, three hundred forty-six million, nine hundred twelve thousand, four hundred ninety-one".