1157986 has 16 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 556416.

The previous prime is 1157977. The next prime is 1157987. The reversal of 1157986 is 6897511.

It is not an unprimeable number, because it can be changed into a prime (1157987) 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, 9055 + ... + 9181.

It is an arithmetic number, because the mean of its divisors is an integer number (112896).

2^1157986 is an apocalyptic number.

1157986 is a deficient number, since it is larger than the sum of its proper divisors (648350).

1157986 is a wasteful number, since it uses less digits than its factorization.

1157986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273.

The product of its digits is 15120, while the sum is 37.

The square root of 1157986 is about 1076.0975792185. The cubic root of 1157986 is about 105.0109134537.

The spelling of 1157986 in words is "one million, one hundred fifty-seven thousand, nine hundred eighty-six".