1161860563 has 8 divisors (see below), whose sum is σ = 1269889920. Its totient is φ = 1058240640.

The previous prime is 1161860549. The next prime is 1161860573. The reversal of 1161860563 is 3650681611.

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 1161860563 - 2²¹ = 1159763411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161860503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101808 + ... + 1102861.

It is an arithmetic number, because the mean of its divisors is an integer number (158736240).

Almost surely, 2^1161860563 is an apocalyptic number.

1161860563 is a deficient number, since it is larger than the sum of its proper divisors (108029357).

1161860563 is a wasteful number, since it uses less digits than its factorization.

1161860563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204717.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1161860563 is about 34086.0757934967. The cubic root of 1161860563 is about 1051.2790348383.

The spelling of 1161860563 in words is "one billion, one hundred sixty-one million, eight hundred sixty thousand, five hundred sixty-three".