1161307563 has 8 divisors (see below), whose sum is σ = 1667518608. Its totient is φ = 714650784.

The previous prime is 1161307517. The next prime is 1161307573. The reversal of 1161307563 is 3657031611.

It is a happy number.

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

It is not a de Polignac number, because 1161307563 - 2¹⁰ = 1161306539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1161307573) 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, 14888520 + ... + 14888597.

It is an arithmetic number, because the mean of its divisors is an integer number (208439826).

Almost surely, 2^1161307563 is an apocalyptic number.

1161307563 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1161307563 is a deficient number, since it is larger than the sum of its proper divisors (506211045).

1161307563 is a wasteful number, since it uses less digits than its factorization.

1161307563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29777133.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 1161307563 is about 34077.9630113069. The cubic root of 1161307563 is about 1051.1122191912.

The spelling of 1161307563 in words is "one billion, one hundred sixty-one million, three hundred seven thousand, five hundred sixty-three".