1079946894581 has 4 divisors (see below), whose sum is σ = 1117186442700. Its totient is φ = 1042707346464.

The previous prime is 1079946894571. The next prime is 1079946894599. The reversal of 1079946894581 is 1854986499701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 698158842481 + 381788052100 = 835559^2 + 617890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1079946894581 is a prime.

It is a super-2 number, since 2×1079946894581² (a number of 25 digits) 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 (1079946894571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18619774016 + ... + 18619774073.

It is an arithmetic number, because the mean of its divisors is an integer number (279296610675).

Almost surely, 2^{1079946894581} is an apocalyptic number.

It is an amenable number.

1079946894581 is a deficient number, since it is larger than the sum of its proper divisors (37239548119).

1079946894581 is an equidigital number, since it uses as much as digits as its factorization.

1079946894581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37239548118.

The product of its (nonzero) digits is 156764160, while the sum is 71.

The spelling of 1079946894581 in words is "one trillion, seventy-nine billion, nine hundred forty-six million, eight hundred ninety-four thousand, five hundred eighty-one".