2765918465 has 8 divisors (see below), whose sum is σ = 3319666728. Its totient is φ = 2212358400.

The previous prime is 2765918443. The next prime is 2765918489. The reversal of 2765918465 is 5648195672.

It is a Cunningham number, because it is equal to 52592²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 2765918464 = 1^2 + 52592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2765918465 - 2¹⁴ = 2765902081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12392 + ... + 75401.

It is an arithmetic number, because the mean of its divisors is an integer number (414958341).

Almost surely, 2^2765918465 is an apocalyptic number.

It is an amenable number.

2765918465 is a deficient number, since it is larger than the sum of its proper divisors (553748263).

2765918465 is an equidigital number, since it uses as much as digits as its factorization.

2765918465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94099.

The product of its digits is 3628800, while the sum is 53.

The square root of 2765918465 is about 52592.0000095071. Note that the first 5 decimals coincide. The cubic root of 2765918465 is about 1403.7177487517.

The spelling of 2765918465 in words is "two billion, seven hundred sixty-five million, nine hundred eighteen thousand, four hundred sixty-five".