1081287329 has 16 divisors (see below), whose sum is σ = 1164658176. Its totient is φ = 1000204800.

The previous prime is 1081287313. The next prime is 1081287353. The reversal of 1081287329 is 9237821801.

It is a cyclic number.

It is not a de Polignac number, because 1081287329 - 2⁴ = 1081287313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081284329) 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 15 ways as a sum of consecutive naturals, for example, 441749 + ... + 444189.

It is an arithmetic number, because the mean of its divisors is an integer number (72791136).

Almost surely, 2^1081287329 is an apocalyptic number.

It is an amenable number.

1081287329 is a deficient number, since it is larger than the sum of its proper divisors (83370847).

1081287329 is a wasteful number, since it uses less digits than its factorization.

1081287329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1081287329 is about 32882.9337042789. The cubic root of 1081287329 is about 1026.3930545939.

The spelling of 1081287329 in words is "one billion, eighty-one million, two hundred eighty-seven thousand, three hundred twenty-nine".