1081045539 has 48 divisors (see below), whose sum is σ = 1858214592. Its totient is φ = 592717824.

The previous prime is 1081045529. The next prime is 1081045573. The reversal of 1081045539 is 9355401801.

1081045539 is a `hidden beast` number, since 1 + 0 + 81 + 0 + 45 + 539 = 666.

It is not a de Polignac number, because 1081045539 - 2²³ = 1072656931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081045519) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166987 + ... + 173339.

It is an arithmetic number, because the mean of its divisors is an integer number (38712804).

Almost surely, 2^1081045539 is an apocalyptic number.

1081045539 is a deficient number, since it is larger than the sum of its proper divisors (777169053).

1081045539 is a wasteful number, since it uses less digits than its factorization.

1081045539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476 (or 6473 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1081045539 is about 32879.2569715315. The cubic root of 1081045539 is about 1026.3165439168.

The spelling of 1081045539 in words is "one billion, eighty-one million, forty-five thousand, five hundred thirty-nine".