1357709493 has 12 divisors (see below), whose sum is σ = 2105835360. Its totient is φ = 775833912.

The previous prime is 1357709491. The next prime is 1357709497. The reversal of 1357709493 is 3949077531.

It is a happy number.

It is not a de Polignac number, because 1357709493 - 2¹ = 1357709491 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357709491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4617913 + ... + 4618206.

It is an arithmetic number, because the mean of its divisors is an integer number (175486280).

Almost surely, 2^1357709493 is an apocalyptic number.

It is an amenable number.

1357709493 is a deficient number, since it is larger than the sum of its proper divisors (748125867).

1357709493 is an equidigital number, since it uses as much as digits as its factorization.

1357709493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9236136 (or 9236129 counting only the distinct ones).

The product of its (nonzero) digits is 714420, while the sum is 48.

The square root of 1357709493 is about 36847.1096966913. The cubic root of 1357709493 is about 1107.3093103672.

The spelling of 1357709493 in words is "one billion, three hundred fifty-seven million, seven hundred nine thousand, four hundred ninety-three".