1353861563 has 4 divisors (see below), whose sum is σ = 1374068520. Its totient is φ = 1333654608.

The previous prime is 1353861559. The next prime is 1353861569. The reversal of 1353861563 is 3651683531.

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 1353861563 - 2² = 1353861559 is a prime.

It is a super-2 number, since 2×1353861563² = 3665882263537605938, which contains 22 as substring.

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 1353861563.

It is not an unprimeable number, because it can be changed into a prime (1353861569) 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, 10103378 + ... + 10103511.

It is an arithmetic number, because the mean of its divisors is an integer number (343517130).

Almost surely, 2^1353861563 is an apocalyptic number.

1353861563 is a deficient number, since it is larger than the sum of its proper divisors (20206957).

1353861563 is an equidigital number, since it uses as much as digits as its factorization.

1353861563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20206956.

The product of its digits is 194400, while the sum is 41.

The square root of 1353861563 is about 36794.8578336702. The cubic root of 1353861563 is about 1106.2622330757.

The spelling of 1353861563 in words is "one billion, three hundred fifty-three million, eight hundred sixty-one thousand, five hundred sixty-three".