2265169921 has 8 divisors (see below), whose sum is σ = 2589266624. Its totient is φ = 1941198480.

The previous prime is 2265169901. The next prime is 2265169939. The reversal of 2265169921 is 1299615622.

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

It is a cyclic number.

It is not a de Polignac number, because 2265169921 - 2⁵ = 2265169889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2265169901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11311 + ... + 68251.

It is an arithmetic number, because the mean of its divisors is an integer number (323658328).

Almost surely, 2^2265169921 is an apocalyptic number.

It is an amenable number.

2265169921 is a deficient number, since it is larger than the sum of its proper divisors (324096703).

2265169921 is an equidigital number, since it uses as much as digits as its factorization.

2265169921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62631.

The product of its digits is 116640, while the sum is 43.

The square root of 2265169921 is about 47593.8012875626. The cubic root of 2265169921 is about 1313.3090248549.

The spelling of 2265169921 in words is "two billion, two hundred sixty-five million, one hundred sixty-nine thousand, nine hundred twenty-one".