1086981291 has 24 divisors (see below), whose sum is σ = 1729793520. Its totient is φ = 652248000.

The previous prime is 1086981283. The next prime is 1086981331. The reversal of 1086981291 is 1921896801.

It is not a de Polignac number, because 1086981291 - 2³ = 1086981283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1086981281) 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 23 ways as a sum of consecutive naturals, for example, 44356 + ... + 64353.

It is an arithmetic number, because the mean of its divisors is an integer number (72074730).

Almost surely, 2^1086981291 is an apocalyptic number.

1086981291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1086981291 is a deficient number, since it is larger than the sum of its proper divisors (642812229).

1086981291 is a wasteful number, since it uses less digits than its factorization.

1086981291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108827 (or 108824 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The square root of 1086981291 is about 32969.3993120894. The cubic root of 1086981291 is about 1028.1915326302.

The spelling of 1086981291 in words is "one billion, eighty-six million, nine hundred eighty-one thousand, two hundred ninety-one".