2278532159 has 4 divisors (see below), whose sum is σ = 2288750016. Its totient is φ = 2268314304.

The previous prime is 2278532149. The next prime is 2278532171. The reversal of 2278532159 is 9512358722.

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

It is a cyclic number.

It is not a de Polignac number, because 2278532159 - 2⁴ = 2278532143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278532149) 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, 5108594 + ... + 5109039.

It is an arithmetic number, because the mean of its divisors is an integer number (572187504).

Almost surely, 2^2278532159 is an apocalyptic number.

2278532159 is a deficient number, since it is larger than the sum of its proper divisors (10217857).

2278532159 is a wasteful number, since it uses less digits than its factorization.

2278532159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10217856.

The product of its digits is 302400, while the sum is 44.

The square root of 2278532159 is about 47733.9727971599. The cubic root of 2278532159 is about 1315.8863670003.

The spelling of 2278532159 in words is "two billion, two hundred seventy-eight million, five hundred thirty-two thousand, one hundred fifty-nine".