2269728145 has 4 divisors (see below), whose sum is σ = 2723673780. Its totient is φ = 1815782512.

The previous prime is 2269728133. The next prime is 2269728151. The reversal of 2269728145 is 5418279622.

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 1274704209 + 995023936 = 35703^2 + 31544^2 .

It is a cyclic number.

It is not a de Polignac number, because 2269728145 - 2⁷ = 2269728017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2269728095 and 2269728104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226972810 + ... + 226972819.

It is an arithmetic number, because the mean of its divisors is an integer number (680918445).

Almost surely, 2^2269728145 is an apocalyptic number.

It is an amenable number.

2269728145 is a deficient number, since it is larger than the sum of its proper divisors (453945635).

2269728145 is an equidigital number, since it uses as much as digits as its factorization.

2269728145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453945634.

The product of its digits is 483840, while the sum is 46.

The square root of 2269728145 is about 47641.6639612850. The cubic root of 2269728145 is about 1314.1893628928.

The spelling of 2269728145 in words is "two billion, two hundred sixty-nine million, seven hundred twenty-eight thousand, one hundred forty-five".