4687868749 has 2 divisors, whose sum is σ = 4687868750. Its totient is φ = 4687868748.

The previous prime is 4687868747. The next prime is 4687868827. The reversal of 4687868749 is 9478687864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2551765225 + 2136103524 = 50515^2 + 46218^2 .

It is a cyclic number.

It is not a de Polignac number, because 4687868749 - 2¹ = 4687868747 is a prime.

It is a super-2 number, since 2×4687868749² = 43952226815701650002, which contains 22 as substring.

Together with 4687868747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4687868743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2343934374 + 2343934375.

It is an arithmetic number, because the mean of its divisors is an integer number (2343934375).

Almost surely, 2^4687868749 is an apocalyptic number.

It is an amenable number.

4687868749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4687868749 is an equidigital number, since it uses as much as digits as its factorization.

4687868749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130056192, while the sum is 67.

The square root of 4687868749 is about 68468.0125971245. The cubic root of 4687868749 is about 1673.6262589847.

The spelling of 4687868749 in words is "four billion, six hundred eighty-seven million, eight hundred sixty-eight thousand, seven hundred forty-nine".