1135990 has 16 divisors (see below), whose sum is σ = 2089152. Its totient is φ = 444544.

The previous prime is 1135969. The next prime is 1135997. The reversal of 1135990 is 995311.

1135990 = 10² + 11² + ... + 150².

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (130572).

2^1135990 is an apocalyptic number.

1135990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1135990 is a deficient number, since it is larger than the sum of its proper divisors (953162).

1135990 is a wasteful number, since it uses less digits than its factorization.

1135990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 1135990 is about 1065.8283163812. The cubic root of 1135990 is about 104.3417627566.

It can be divided in two parts, 11359 and 90, that added together give a square (11449 = 107²).

The spelling of 1135990 in words is "one million, one hundred thirty-five thousand, nine hundred ninety".