2143383278 has 4 divisors (see below), whose sum is σ = 3215074920. Its totient is φ = 1071691638.

The previous prime is 2143383269. The next prime is 2143383313. The reversal of 2143383278 is 8723833412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535845818 + ... + 535845821.

It is an arithmetic number, because the mean of its divisors is an integer number (803768730).

Almost surely, 2^2143383278 is an apocalyptic number.

2143383278 is a deficient number, since it is larger than the sum of its proper divisors (1071691642).

2143383278 is a wasteful number, since it uses less digits than its factorization.

2143383278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071691641.

The product of its digits is 193536, while the sum is 41.

The square root of 2143383278 is about 46296.6875488949. The cubic root of 2143383278 is about 1289.3374956836.

The spelling of 2143383278 in words is "two billion, one hundred forty-three million, three hundred eighty-three thousand, two hundred seventy-eight".