1081071513 has 12 divisors (see below), whose sum is σ = 1603752228. Its totient is φ = 701235360.

The previous prime is 1081071493. The next prime is 1081071529. The reversal of 1081071513 is 3151701801.

1081071513 is a `hidden beast` number, since 1 + 0 + 81 + 0 + 71 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 610485264 + 470586249 = 24708^2 + 21693^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1081071513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1081071613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1622898 + ... + 1623563.

It is an arithmetic number, because the mean of its divisors is an integer number (133646019).

Almost surely, 2^1081071513 is an apocalyptic number.

It is an amenable number.

1081071513 is a deficient number, since it is larger than the sum of its proper divisors (522680715).

1081071513 is a wasteful number, since it uses less digits than its factorization.

1081071513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246504 (or 3246501 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 1081071513 is about 32879.6519598368. The cubic root of 1081071513 is about 1026.3247635312.

The spelling of 1081071513 in words is "one billion, eighty-one million, seventy-one thousand, five hundred thirteen".