2144775387 has 8 divisors (see below), whose sum is σ = 2866337280. Its totient is φ = 1426531880.

The previous prime is 2144775383. The next prime is 2144775397. The reversal of 2144775387 is 7835774412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144775387 - 2² = 2144775383 is a prime.

It is a super-2 number, since 2×2144775387² = 9200122921361999538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2144775383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828087 + ... + 830672.

It is an arithmetic number, because the mean of its divisors is an integer number (358292160).

Almost surely, 2^2144775387 is an apocalyptic number.

2144775387 is a deficient number, since it is larger than the sum of its proper divisors (721561893).

2144775387 is a wasteful number, since it uses less digits than its factorization.

2144775387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659193.

The product of its digits is 1317120, while the sum is 48.

The square root of 2144775387 is about 46311.7197586097. The cubic root of 2144775387 is about 1289.6165731434.

The spelling of 2144775387 in words is "two billion, one hundred forty-four million, seven hundred seventy-five thousand, three hundred eighty-seven".