2280645901 has 4 divisors (see below), whose sum is σ = 2290109404. Its totient is φ = 2271182400.

The previous prime is 2280645877. The next prime is 2280645947. The reversal of 2280645901 is 1095460822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1095460822 = 2 ⋅547730411.

It can be written as a sum of positive squares in 2 ways, for example, as 1489574025 + 791071876 = 38595^2 + 28126^2 .

It is a cyclic number.

It is not a de Polignac number, because 2280645901 - 2²³ = 2272257293 is a prime.

It is a super-3 number, since 3×2280645901³ (a number of 29 digits) contains 333 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 (2280645001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731390 + ... + 4731871.

It is an arithmetic number, because the mean of its divisors is an integer number (572527351).

Almost surely, 2^2280645901 is an apocalyptic number.

It is an amenable number.

2280645901 is a deficient number, since it is larger than the sum of its proper divisors (9463503).

2280645901 is an equidigital number, since it uses as much as digits as its factorization.

2280645901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463502.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 2280645901 is about 47756.1085202720. The cubic root of 2280645901 is about 1316.2931471020.

The spelling of 2280645901 in words is "two billion, two hundred eighty million, six hundred forty-five thousand, nine hundred one".