1357943653 has 4 divisors (see below), whose sum is σ = 1481393088. Its totient is φ = 1234494220.

The previous prime is 1357943651. The next prime is 1357943659. The reversal of 1357943653 is 3563497531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3563497531 = 11 ⋅323954321.

It is a cyclic number.

It is not a de Polignac number, because 1357943653 - 2¹ = 1357943651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357943651) 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, 61724701 + ... + 61724722.

It is an arithmetic number, because the mean of its divisors is an integer number (370348272).

Almost surely, 2^1357943653 is an apocalyptic number.

It is an amenable number.

1357943653 is a deficient number, since it is larger than the sum of its proper divisors (123449435).

1357943653 is a wasteful number, since it uses less digits than its factorization.

1357943653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123449434.

The product of its digits is 1020600, while the sum is 46.

The square root of 1357943653 is about 36850.2870138076. The cubic root of 1357943653 is about 1107.3729647903.

The spelling of 1357943653 in words is "one billion, three hundred fifty-seven million, nine hundred forty-three thousand, six hundred fifty-three".