2870287749 has 18 divisors (see below), whose sum is σ = 4822865190. Its totient is φ = 1640164176.

The previous prime is 2870287741. The next prime is 2870287751. The reversal of 2870287749 is 9477820782.

It can be written as a sum of positive squares in only one way, i.e., 2683965249 + 186322500 = 51807^2 + 13650^2 .

It is not a de Polignac number, because 2870287749 - 2³ = 2870287741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2870287695 and 2870287704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870287741) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3253854 + ... + 3254735.

It is an arithmetic number, because the mean of its divisors is an integer number (267936955).

Almost surely, 2^2870287749 is an apocalyptic number.

It is an amenable number.

2870287749 is a deficient number, since it is larger than the sum of its proper divisors (1952577441).

2870287749 is a wasteful number, since it uses less digits than its factorization.

2870287749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6508609 (or 6508599 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 2870287749 is about 53575.0664861930. The cubic root of 2870287749 is about 1421.1561946614.

The spelling of 2870287749 in words is "two billion, eight hundred seventy million, two hundred eighty-seven thousand, seven hundred forty-nine".