1159811137 has 8 divisors (see below), whose sum is σ = 1183220136. Its totient is φ = 1136458752.

The previous prime is 1159811113. The next prime is 1159811197. The reversal of 1159811137 is 7311189511.

It is a Cunningham number, because it is equal to 34056²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 52186176 + 1107624961 = 7224^2 + 33281^2 .

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 1159811137 - 2¹¹ = 1159809089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1159811096 and 1159811105.

It is not an unprimeable number, because it can be changed into a prime (1159811197) 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, 28513 + ... + 55969.

It is an arithmetic number, because the mean of its divisors is an integer number (147902517).

Almost surely, 2^1159811137 is an apocalyptic number.

It is an amenable number.

1159811137 is a deficient number, since it is larger than the sum of its proper divisors (23408999).

1159811137 is an equidigital number, since it uses as much as digits as its factorization.

1159811137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28307.

The product of its digits is 7560, while the sum is 37.

The square root of 1159811137 is about 34056.0000146817. Note that the first 4 decimals coincide. The cubic root of 1159811137 is about 1050.6605479342.

The spelling of 1159811137 in words is "one billion, one hundred fifty-nine million, eight hundred eleven thousand, one hundred thirty-seven".