1079968581 has 6 divisors (see below), whose sum is σ = 1559954630. Its totient is φ = 719979048.

The previous prime is 1079968579. The next prime is 1079968619. The reversal of 1079968581 is 1858699701.

It can be written as a sum of positive squares in only one way, i.e., 988096356 + 91872225 = 31434^2 + 9585^2 .

It is not a de Polignac number, because 1079968581 - 2¹ = 1079968579 is a prime.

It is a super-2 number, since 2×1079968581² = 2332664271894307122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1079968501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59998246 + ... + 59998263.

Almost surely, 2^1079968581 is an apocalyptic number.

It is an amenable number.

1079968581 is a deficient number, since it is larger than the sum of its proper divisors (479986049).

1079968581 is a wasteful number, since it uses less digits than its factorization.

1079968581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119996515 (or 119996512 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The square root of 1079968581 is about 32862.8754219712. The cubic root of 1079968581 is about 1025.9756186995.

The spelling of 1079968581 in words is "one billion, seventy-nine million, nine hundred sixty-eight thousand, five hundred eighty-one".