1083132781 has 4 divisors (see below), whose sum is σ = 1146846492. Its totient is φ = 1019419072.

The previous prime is 1083132773. The next prime is 1083132811. The reversal of 1083132781 is 1872313801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1872313801 = 8231 ⋅227471.

It can be written as a sum of positive squares in 2 ways, for example, as 1017035881 + 66096900 = 31891^2 + 8130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1083132781 - 2³ = 1083132773 is a prime.

It is a super-2 number, since 2×1083132781² = 2346353242553587922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083138781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31856830 + ... + 31856863.

It is an arithmetic number, because the mean of its divisors is an integer number (286711623).

Almost surely, 2^1083132781 is an apocalyptic number.

It is an amenable number.

1083132781 is a deficient number, since it is larger than the sum of its proper divisors (63713711).

1083132781 is an equidigital number, since it uses as much as digits as its factorization.

1083132781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63713710.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1083132781 is about 32910.9826805582. The cubic root of 1083132781 is about 1026.9766437064.

The spelling of 1083132781 in words is "one billion, eighty-three million, one hundred thirty-two thousand, seven hundred eighty-one".