1156563316 has 24 divisors (see below), whose sum is σ = 2093897736. Its totient is φ = 558535680.

The previous prime is 1156563311. The next prime is 1156563337. The reversal of 1156563316 is 6133656511.

It can be written as a sum of positive squares in 4 ways, for example, as 375584400 + 780978916 = 19380^2 + 27946^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156563311) 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, 8245 + ... + 48796.

It is an arithmetic number, because the mean of its divisors is an integer number (87245739).

Almost surely, 2^1156563316 is an apocalyptic number.

It is an amenable number.

1156563316 is a deficient number, since it is larger than the sum of its proper divisors (937334420).

1156563316 is a wasteful number, since it uses less digits than its factorization.

1156563316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57219 (or 57217 counting only the distinct ones).

The product of its digits is 48600, while the sum is 37.

The square root of 1156563316 is about 34008.2830498689. The cubic root of 1156563316 is about 1049.6789089251.

The spelling of 1156563316 in words is "one billion, one hundred fifty-six million, five hundred sixty-three thousand, three hundred sixteen".