2389397766 has 64 divisors (see below), whose sum is σ = 5644098048. Its totient is φ = 660089088.

The previous prime is 2389397749. The next prime is 2389397827. The reversal of 2389397766 is 6677939832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248586 + ... + 258018.

It is an arithmetic number, because the mean of its divisors is an integer number (88189032).

Almost surely, 2^2389397766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2389397766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822049024).

2389397766 is an abundant number, since it is smaller than the sum of its proper divisors (3254700282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2389397766 is a wasteful number, since it uses less digits than its factorization.

2389397766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9645.

The product of its digits is 20575296, while the sum is 60.

The square root of 2389397766 is about 48881.4664878213. The cubic root of 2389397766 is about 1336.8914663347.

The spelling of 2389397766 in words is "two billion, three hundred eighty-nine million, three hundred ninety-seven thousand, seven hundred sixty-six".