1359643253 has 4 divisors (see below), whose sum is σ = 1360031628. Its totient is φ = 1359254880.

The previous prime is 1359643247. The next prime is 1359643267. The reversal of 1359643253 is 3523469531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1273561969 + 86081284 = 35687^2 + 9278^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359643253 - 2⁸ = 1359642997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1359643253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1359643853) 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, 188888 + ... + 195953.

It is an arithmetic number, because the mean of its divisors is an integer number (340007907).

Almost surely, 2^1359643253 is an apocalyptic number.

It is an amenable number.

1359643253 is a deficient number, since it is larger than the sum of its proper divisors (388375).

1359643253 is an equidigital number, since it uses as much as digits as its factorization.

1359643253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388374.

The product of its digits is 291600, while the sum is 41.

The square root of 1359643253 is about 36873.3406813107. The cubic root of 1359643253 is about 1107.8347675622.

The spelling of 1359643253 in words is "one billion, three hundred fifty-nine million, six hundred forty-three thousand, two hundred fifty-three".