1357707493 has 2 divisors, whose sum is σ = 1357707494. Its totient is φ = 1357707492.

The previous prime is 1357707479. The next prime is 1357707517. The reversal of 1357707493 is 3947077531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357701409 + 6084 = 36847^2 + 78^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1357707493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1357707433) 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, 678853746 + 678853747.

It is an arithmetic number, because the mean of its divisors is an integer number (678853747).

Almost surely, 2^1357707493 is an apocalyptic number.

It is an amenable number.

1357707493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1357707493 is an equidigital number, since it uses as much as digits as its factorization.

1357707493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 555660, while the sum is 46.

The square root of 1357707493 is about 36847.0825575106. The cubic root of 1357707493 is about 1107.3087666526.

The spelling of 1357707493 in words is "one billion, three hundred fifty-seven million, seven hundred seven thousand, four hundred ninety-three".