1081351709 has 6 divisors (see below), whose sum is σ = 1087458750. Its totient is φ = 1075278776.

The previous prime is 1081351673. The next prime is 1081351727. The reversal of 1081351709 is 9071531801.

It can be written as a sum of positive squares in only one way, i.e., 1061326084 + 20025625 = 32578^2 + 4475^2 .

It is not a de Polignac number, because 1081351709 - 2²⁸ = 812916253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081351729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15167 + ... + 48915.

It is an arithmetic number, because the mean of its divisors is an integer number (181243125).

Almost surely, 2^1081351709 is an apocalyptic number.

It is an amenable number.

1081351709 is a deficient number, since it is larger than the sum of its proper divisors (6107041).

1081351709 is an frugal number, since it uses more digits than its factorization.

1081351709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34107 (or 33928 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 1081351709 is about 32883.9126169621. The cubic root of 1081351709 is about 1026.4134247187.

The spelling of 1081351709 in words is "one billion, eighty-one million, three hundred fifty-one thousand, seven hundred nine".