1048191048581 has 8 divisors (see below), whose sum is σ = 1050755647224. Its totient is φ = 1045626805440.

The previous prime is 1048191048557. The next prime is 1048191048589. The reversal of 1048191048581 is 1858401918401.

It can be written as a sum of positive squares in 4 ways, for example, as 167935681 + 1048023112900 = 12959^2 + 1023730^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1048191048581 - 2¹⁰ = 1048191047557 is a prime.

It is a super-3 number, since 3×1048191048581³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1048191048589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6391055 + ... + 6553011.

It is an arithmetic number, because the mean of its divisors is an integer number (131344455903).

Almost surely, 2^{1048191048581} is an apocalyptic number.

It is an amenable number.

1048191048581 is a deficient number, since it is larger than the sum of its proper divisors (2564598643).

1048191048581 is a wasteful number, since it uses less digits than its factorization.

1048191048581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177751.

The product of its (nonzero) digits is 368640, while the sum is 50.

The spelling of 1048191048581 in words is "one trillion, forty-eight billion, one hundred ninety-one million, forty-eight thousand, five hundred eighty-one".