2765379889 has 4 divisors (see below), whose sum is σ = 2840119924. Its totient is φ = 2690639856.

The previous prime is 2765379829. The next prime is 2765379913. The reversal of 2765379889 is 9889735672.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2332407025 + 432972864 = 48295^2 + 20808^2 .

It is a cyclic number.

It is not a de Polignac number, because 2765379889 - 2³¹ = 617896241 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 2765379889.

It is not an unprimeable number, because it can be changed into a prime (2765379829) 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, 37369962 + ... + 37370035.

It is an arithmetic number, because the mean of its divisors is an integer number (710029981).

Almost surely, 2^2765379889 is an apocalyptic number.

It is an amenable number.

2765379889 is a deficient number, since it is larger than the sum of its proper divisors (74740035).

2765379889 is an equidigital number, since it uses as much as digits as its factorization.

2765379889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74740034.

The product of its digits is 45722880, while the sum is 64.

The square root of 2765379889 is about 52586.8794377457. The cubic root of 2765379889 is about 1403.6266328139.

The spelling of 2765379889 in words is "two billion, seven hundred sixty-five million, three hundred seventy-nine thousand, eight hundred eighty-nine".