1131082690 has 16 divisors (see below), whose sum is σ = 2036451960. Its totient is φ = 452321280.

The previous prime is 1131082651. The next prime is 1131082697. The reversal of 1131082690 is 962801311.

It can be written as a sum of positive squares in 4 ways, for example, as 1046975449 + 84107241 = 32357^2 + 9171^2 .

It is a super-2 number, since 2×1131082690² = 2558696103235272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131082697) 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, 37570 + ... + 60610.

Almost surely, 2^1131082690 is an apocalyptic number.

1131082690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131082690 is a deficient number, since it is larger than the sum of its proper divisors (905369270).

1131082690 is a wasteful number, since it uses less digits than its factorization.

1131082690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27957.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1131082690 is about 33631.5728148417. The cubic root of 1131082690 is about 1041.9129885604.

The spelling of 1131082690 in words is "one billion, one hundred thirty-one million, eighty-two thousand, six hundred ninety".