2868758991 has 32 divisors (see below), whose sum is σ = 4859788800. Its totient is φ = 1638403200.

The previous prime is 2868758989. The next prime is 2868759001. The reversal of 2868758991 is 1998578682.

It is a happy number.

It is not a de Polignac number, because 2868758991 - 2¹ = 2868758989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868754991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526680 + ... + 532098.

It is an arithmetic number, because the mean of its divisors is an integer number (151868400).

Almost surely, 2^2868758991 is an apocalyptic number.

2868758991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2868758991 is a deficient number, since it is larger than the sum of its proper divisors (1991029809).

2868758991 is a wasteful number, since it uses less digits than its factorization.

2868758991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236 (or 8230 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 63.

The square root of 2868758991 is about 53560.7971467938. The cubic root of 2868758991 is about 1420.9038402024.

It can be divided in two parts, 28687 and 58991, that added together give a palindrome (87678).

The spelling of 2868758991 in words is "two billion, eight hundred sixty-eight million, seven hundred fifty-eight thousand, nine hundred ninety-one".