2489968749 has 4 divisors (see below), whose sum is σ = 3319958336. Its totient is φ = 1659979164.

The previous prime is 2489968729. The next prime is 2489968787. The reversal of 2489968749 is 9478699842.

2489968749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2489968749 - 2⁸ = 2489968493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2489968749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489968729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414994789 + ... + 414994794.

It is an arithmetic number, because the mean of its divisors is an integer number (829989584).

Almost surely, 2^2489968749 is an apocalyptic number.

It is an amenable number.

2489968749 is a deficient number, since it is larger than the sum of its proper divisors (829989587).

2489968749 is an equidigital number, since it uses as much as digits as its factorization.

2489968749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829989586.

The product of its digits is 62705664, while the sum is 66.

The square root of 2489968749 is about 49899.5866616147. The cubic root of 2489968749 is about 1355.3911079888.

The spelling of 2489968749 in words is "two billion, four hundred eighty-nine million, nine hundred sixty-eight thousand, seven hundred forty-nine".