1351386493 has 2 divisors, whose sum is σ = 1351386494. Its totient is φ = 1351386492.

The previous prime is 1351386481. The next prime is 1351386539. The reversal of 1351386493 is 3946831531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1350342009 + 1044484 = 36747^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351386493 - 2⁵ = 1351386461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351386793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675693246 + 675693247.

It is an arithmetic number, because the mean of its divisors is an integer number (675693247).

Almost surely, 2^1351386493 is an apocalyptic number.

It is an amenable number.

1351386493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351386493 is an equidigital number, since it uses as much as digits as its factorization.

1351386493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 1351386493 is about 36761.2090796807. The cubic root of 1351386493 is about 1105.5876819053.

The spelling of 1351386493 in words is "one billion, three hundred fifty-one million, three hundred eighty-six thousand, four hundred ninety-three".