2265819538 has 8 divisors (see below), whose sum is σ = 3407291532. Its totient is φ = 1130055696.

The previous prime is 2265819533. The next prime is 2265819541. The reversal of 2265819538 is 8359185622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2255015169 + 10804369 = 47487^2 + 3287^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2265819491 and 2265819500.

It is not an unprimeable number, because it can be changed into a prime (2265819533) 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, 1426045 + ... + 1427632.

Almost surely, 2^2265819538 is an apocalyptic number.

2265819538 is a deficient number, since it is larger than the sum of its proper divisors (1141471994).

2265819538 is a wasteful number, since it uses less digits than its factorization.

2265819538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854076.

The product of its digits is 1036800, while the sum is 49.

The square root of 2265819538 is about 47600.6253950513. The cubic root of 2265819538 is about 1313.4345586787.

The spelling of 2265819538 in words is "two billion, two hundred sixty-five million, eight hundred nineteen thousand, five hundred thirty-eight".