2288253661 has 4 divisors (see below), whose sum is σ = 2289202812. Its totient is φ = 2287304512.

The previous prime is 2288253659. The next prime is 2288253673. The reversal of 2288253661 is 1663528822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2272333561 + 15920100 = 47669^2 + 3990^2 .

It is a cyclic number.

It is not a de Polignac number, because 2288253661 - 2¹ = 2288253659 is a prime.

It is a super-2 number, since 2×2288253661² = 10472209634159805842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288257661) 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, 470950 + ... + 475783.

It is an arithmetic number, because the mean of its divisors is an integer number (572300703).

Almost surely, 2^2288253661 is an apocalyptic number.

It is an amenable number.

2288253661 is a deficient number, since it is larger than the sum of its proper divisors (949151).

2288253661 is an equidigital number, since it uses as much as digits as its factorization.

2288253661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949150.

The product of its digits is 276480, while the sum is 43.

The square root of 2288253661 is about 47835.6944237251. The cubic root of 2288253661 is about 1317.7551493091.

The spelling of 2288253661 in words is "two billion, two hundred eighty-eight million, two hundred fifty-three thousand, six hundred sixty-one".