2144875906 has 4 divisors (see below), whose sum is σ = 3217313862. Its totient is φ = 1072437952.

The previous prime is 2144875871. The next prime is 2144875919. The reversal of 2144875906 is 6095784412.

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

It can be written as a sum of positive squares in only one way, i.e., 2052543025 + 92332881 = 45305^2 + 9609^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536218975 + ... + 536218978.

Almost surely, 2^2144875906 is an apocalyptic number.

2144875906 is a deficient number, since it is larger than the sum of its proper divisors (1072437956).

2144875906 is a wasteful number, since it uses less digits than its factorization.

2144875906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072437955.

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

The square root of 2144875906 is about 46312.8049895491. The cubic root of 2144875906 is about 1289.6367196110.

The spelling of 2144875906 in words is "two billion, one hundred forty-four million, eight hundred seventy-five thousand, nine hundred six".