2378765653 has 4 divisors (see below), whose sum is σ = 2595017088. Its totient is φ = 2162514220.

The previous prime is 2378765621. The next prime is 2378765659. The reversal of 2378765653 is 3565678732.

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 a cyclic number.

It is not a de Polignac number, because 2378765653 - 2⁵ = 2378765621 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 2378765653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378765659) 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, 108125701 + ... + 108125722.

It is an arithmetic number, because the mean of its divisors is an integer number (648754272).

Almost surely, 2^2378765653 is an apocalyptic number.

It is an amenable number.

2378765653 is a deficient number, since it is larger than the sum of its proper divisors (216251435).

2378765653 is a wasteful number, since it uses less digits than its factorization.

2378765653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216251434.

The product of its digits is 6350400, while the sum is 52.

The square root of 2378765653 is about 48772.5912065373. The cubic root of 2378765653 is about 1334.9055940947.

The spelling of 2378765653 in words is "two billion, three hundred seventy-eight million, seven hundred sixty-five thousand, six hundred fifty-three".