1159690986 has 64 divisors (see below), whose sum is σ = 2690029440. Its totient is φ = 369982080.

The previous prime is 1159690967. The next prime is 1159690999. The reversal of 1159690986 is 6890969511.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112401 + ... + 122283.

It is an arithmetic number, because the mean of its divisors is an integer number (42031710).

Almost surely, 2^1159690986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1159690986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345014720).

1159690986 is an abundant number, since it is smaller than the sum of its proper divisors (1530338454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1159690986 is a wasteful number, since it uses less digits than its factorization.

1159690986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9988 (or 9982 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The square root of 1159690986 is about 34054.2359479698. The cubic root of 1159690986 is about 1050.6242655112.

The spelling of 1159690986 in words is "one billion, one hundred fifty-nine million, six hundred ninety thousand, nine hundred eighty-six".