2600391001 has 6 divisors (see below), whose sum is σ = 2815808190. Its totient is φ = 2400360768.

The previous prime is 2600390999. The next prime is 2600391037. The reversal of 2600391001 is 1001930062.

It can be written as a sum of positive squares in 3 ways, for example, as 197430601 + 2402960400 = 14051^2 + 49020^2 .

It is not a de Polignac number, because 2600391001 - 2¹ = 2600390999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2600391071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7693296 + ... + 7693633.

It is an arithmetic number, because the mean of its divisors is an integer number (469301365).

Almost surely, 2^2600391001 is an apocalyptic number.

It is an amenable number.

2600391001 is a deficient number, since it is larger than the sum of its proper divisors (215417189).

2600391001 is a wasteful number, since it uses less digits than its factorization.

2600391001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15386955 (or 15386942 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 2600391001 is about 50994.0290720394. The cubic root of 2600391001 is about 1375.1377935296.

The spelling of 2600391001 in words is "two billion, six hundred million, three hundred ninety-one thousand, one".