1357137647 has 4 divisors (see below), whose sum is σ = 1380140040. Its totient is φ = 1334135256.

The previous prime is 1357137631. The next prime is 1357137667. The reversal of 1357137647 is 7467317531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1357137647 - 2⁴ = 1357137631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357137598 and 1357137607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357137667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11501108 + ... + 11501225.

It is an arithmetic number, because the mean of its divisors is an integer number (345035010).

Almost surely, 2^1357137647 is an apocalyptic number.

1357137647 is a deficient number, since it is larger than the sum of its proper divisors (23002393).

1357137647 is an equidigital number, since it uses as much as digits as its factorization.

1357137647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23002392.

The product of its digits is 370440, while the sum is 44.

The square root of 1357137647 is about 36839.3491663466. The cubic root of 1357137647 is about 1107.1538280830.

The spelling of 1357137647 in words is "one billion, three hundred fifty-seven million, one hundred thirty-seven thousand, six hundred forty-seven".