2287998145 has 12 divisors (see below), whose sum is σ = 2897710740. Its totient is φ = 1734060384.

The previous prime is 2287998143. The next prime is 2287998151. The reversal of 2287998145 is 5418997822.

It can be written as a sum of positive squares in 2 ways, for example, as 1081686321 + 1206311824 = 32889^2 + 34732^2 .

It is not a de Polignac number, because 2287998145 - 2¹ = 2287998143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2287998143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631990 + ... + 635599.

It is an arithmetic number, because the mean of its divisors is an integer number (241475895).

Almost surely, 2^2287998145 is an apocalyptic number.

It is an amenable number.

2287998145 is a deficient number, since it is larger than the sum of its proper divisors (609712595).

2287998145 is a wasteful number, since it uses less digits than its factorization.

2287998145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267632 (or 1267613 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 55.

The square root of 2287998145 is about 47833.0235820401. The cubic root of 2287998145 is about 1317.7060987945.

The spelling of 2287998145 in words is "two billion, two hundred eighty-seven million, nine hundred ninety-eight thousand, one hundred forty-five".