2050278399 has 40 divisors (see below), whose sum is σ = 3375139152. Its totient is φ = 1232340480.

The previous prime is 2050278359. The next prime is 2050278463. The reversal of 2050278399 is 9938720502.

It is a Cunningham number, because it is equal to 45280²-1.

It is not a de Polignac number, because 2050278399 - 2⁷ = 2050278271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2050278359) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22639 + ... + 67919.

Almost surely, 2^2050278399 is an apocalyptic number.

2050278399 is a deficient number, since it is larger than the sum of its proper divisors (1324860753).

2050278399 is a wasteful number, since it uses less digits than its factorization.

2050278399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45349 (or 45340 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 2050278399 is about 45279.9999889576. Note that the first 4 decimals coincide. The cubic root of 2050278399 is about 1270.3915958185.

The spelling of 2050278399 in words is "two billion, fifty million, two hundred seventy-eight thousand, three hundred ninety-nine".