2600081749 has 8 divisors (see below), whose sum is σ = 2647168920. Its totient is φ = 2553417216.

The previous prime is 2600081747. The next prime is 2600081753. The reversal of 2600081749 is 9471800062.

It can be written as a sum of positive squares in 4 ways, for example, as 56896849 + 2543184900 = 7543^2 + 50430^2 .

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 2600081749 - 2¹ = 2600081747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2600081747) 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 7 ways as a sum of consecutive naturals, for example, 93232 + ... + 117865.

It is an arithmetic number, because the mean of its divisors is an integer number (330896115).

Almost surely, 2^2600081749 is an apocalyptic number.

It is an amenable number.

2600081749 is a deficient number, since it is larger than the sum of its proper divisors (47087171).

2600081749 is a wasteful number, since it uses less digits than its factorization.

2600081749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211319.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2600081749 is about 50990.9967445234. The cubic root of 2600081749 is about 1375.0832785263.

The spelling of 2600081749 in words is "two billion, six hundred million, eighty-one thousand, seven hundred forty-nine".