2265161100 has 36 divisors (see below), whose sum is σ = 6553866984. Its totient is φ = 604042880.

The previous prime is 2265161083. The next prime is 2265161123. The reversal of 2265161100 is 11615622.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3774969 + ... + 3775568.

Almost surely, 2^2265161100 is an apocalyptic number.

2265161100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2265161100 is an abundant number, since it is smaller than the sum of its proper divisors (4288705884).

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

2265161100 is a wasteful number, since it uses less digits than its factorization.

2265161100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550554 (or 7550547 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 2265161100 is about 47593.7086178415. The cubic root of 2265161100 is about 1313.3073200948.

Adding to 2265161100 its reverse (11615622), we get a palindrome (2276776722).

The spelling of 2265161100 in words is "two billion, two hundred sixty-five million, one hundred sixty-one thousand, one hundred".