1563145313 has 8 divisors (see below), whose sum is σ = 1589529216. Its totient is φ = 1536786000.

The previous prime is 1563145273. The next prime is 1563145319. The reversal of 1563145313 is 3135413651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1563145313 - 2⁶ = 1563145249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1563145313.

It is not an unprimeable number, because it can be changed into a prime (1563145319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158888 + ... + 168438.

It is an arithmetic number, because the mean of its divisors is an integer number (198691152).

Almost surely, 2^1563145313 is an apocalyptic number.

It is an amenable number.

1563145313 is a deficient number, since it is larger than the sum of its proper divisors (26383903).

1563145313 is an equidigital number, since it uses as much as digits as its factorization.

1563145313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295.

The product of its digits is 16200, while the sum is 32.

The square root of 1563145313 is about 39536.6325450208. The cubic root of 1563145313 is about 1160.5569345557.

Adding to 1563145313 its reverse (3135413651), we get a palindrome (4698558964).

The spelling of 1563145313 in words is "one billion, five hundred sixty-three million, one hundred forty-five thousand, three hundred thirteen".