1159561803 has 16 divisors (see below), whose sum is σ = 1553602176. Its totient is φ = 769292160.

The previous prime is 1159561801. The next prime is 1159561873. The reversal of 1159561803 is 3081659511.

It is not a de Polignac number, because 1159561803 - 2¹ = 1159561801 is a prime.

It is a super-2 number, since 2×1159561803² = 2689167149953221618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1159561801) 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 15 ways as a sum of consecutive naturals, for example, 651651 + ... + 653427.

It is an arithmetic number, because the mean of its divisors is an integer number (97100136).

Almost surely, 2^1159561803 is an apocalyptic number.

1159561803 is a deficient number, since it is larger than the sum of its proper divisors (394040373).

1159561803 is a wasteful number, since it uses less digits than its factorization.

1159561803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1159561803 is about 34052.3391707530. The cubic root of 1159561803 is about 1050.5852528673.

The spelling of 1159561803 in words is "one billion, one hundred fifty-nine million, five hundred sixty-one thousand, eight hundred three".