1306461493 has 2 divisors, whose sum is σ = 1306461494. Its totient is φ = 1306461492.

The previous prime is 1306461469. The next prime is 1306461511. The reversal of 1306461493 is 3941646031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067851684 + 238609809 = 32678^2 + 15447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306461493 - 2²⁵ = 1272907061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306401493) 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, 653230746 + 653230747.

It is an arithmetic number, because the mean of its divisors is an integer number (653230747).

Almost surely, 2^1306461493 is an apocalyptic number.

It is an amenable number.

1306461493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306461493 is an equidigital number, since it uses as much as digits as its factorization.

1306461493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 1306461493 is about 36145.0064739239. The cubic root of 1306461493 is about 1093.1981076457.

The spelling of 1306461493 in words is "one billion, three hundred six million, four hundred sixty-one thousand, four hundred ninety-three".