1355644653 has 16 divisors (see below), whose sum is σ = 2009054016. Its totient is φ = 806099840.

The previous prime is 1355644649. The next prime is 1355644657. The reversal of 1355644653 is 3564465531.

It is an interprime number because it is at equal distance from previous prime (1355644649) and next prime (1355644657).

It is a cyclic number.

It is not a de Polignac number, because 1355644653 - 2² = 1355644649 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355644657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385800 + ... + 389297.

It is an arithmetic number, because the mean of its divisors is an integer number (125565876).

Almost surely, 2^1355644653 is an apocalyptic number.

It is an amenable number.

1355644653 is a deficient number, since it is larger than the sum of its proper divisors (653409363).

1355644653 is a wasteful number, since it uses less digits than its factorization.

1355644653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775164.

The product of its digits is 648000, while the sum is 42.

The square root of 1355644653 is about 36819.0800129498. The cubic root of 1355644653 is about 1106.7476839346.

The spelling of 1355644653 in words is "one billion, three hundred fifty-five million, six hundred forty-four thousand, six hundred fifty-three".