1082776581 has 12 divisors (see below), whose sum is σ = 1581584940. Its totient is φ = 713739840.

The previous prime is 1082776577. The next prime is 1082776603. The reversal of 1082776581 is 1856772801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 186732225 + 896044356 = 13665^2 + 29934^2 .

It is not a de Polignac number, because 1082776581 - 2² = 1082776577 is a prime.

It is a super-2 number, since 2×1082776581² = 2344810248724099122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1082776531) 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 11 ways as a sum of consecutive naturals, for example, 675090 + ... + 676691.

It is an arithmetic number, because the mean of its divisors is an integer number (131798745).

Almost surely, 2^1082776581 is an apocalyptic number.

It is an amenable number.

1082776581 is a deficient number, since it is larger than the sum of its proper divisors (498808359).

1082776581 is a wasteful number, since it uses less digits than its factorization.

1082776581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351876 (or 1351873 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 1082776581 is about 32905.5706682015. The cubic root of 1082776581 is about 1026.8640538822.

The spelling of 1082776581 in words is "one billion, eighty-two million, seven hundred seventy-six thousand, five hundred eighty-one".