1157563263 has 8 divisors (see below), whose sum is σ = 1564560688. Its totient is φ = 761137344.

The previous prime is 1157563261. The next prime is 1157563289. The reversal of 1157563263 is 3623657511.

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

It is not a de Polignac number, because 1157563263 - 2¹ = 1157563261 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 (1157563261) 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 7 ways as a sum of consecutive naturals, for example, 2642620 + ... + 2643057.

It is an arithmetic number, because the mean of its divisors is an integer number (195570086).

Almost surely, 2^1157563263 is an apocalyptic number.

1157563263 is a deficient number, since it is larger than the sum of its proper divisors (406997425).

1157563263 is an equidigital number, since it uses as much as digits as its factorization.

1157563263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5285753.

The product of its digits is 113400, while the sum is 39.

The square root of 1157563263 is about 34022.9813949336. The cubic root of 1157563263 is about 1049.9813339085.

The spelling of 1157563263 in words is "one billion, one hundred fifty-seven million, five hundred sixty-three thousand, two hundred sixty-three".