2138200250 has 16 divisors (see below), whose sum is σ = 4002711336. Its totient is φ = 855280000.

The previous prime is 2138200249. The next prime is 2138200271. The reversal of 2138200250 is 520028312.

It can be written as a sum of positive squares in 4 ways, for example, as 1407525289 + 730674961 = 37517^2 + 27031^2 .

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4276151 + ... + 4276650.

Almost surely, 2^2138200250 is an apocalyptic number.

2138200250 is a deficient number, since it is larger than the sum of its proper divisors (1864511086).

2138200250 is an equidigital number, since it uses as much as digits as its factorization.

2138200250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8552818 (or 8552808 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2138200250 is about 46240.6774388092. The cubic root of 2138200250 is about 1288.2973852140.

Adding to 2138200250 its reverse (520028312), we get a palindrome (2658228562).

The spelling of 2138200250 in words is "two billion, one hundred thirty-eight million, two hundred thousand, two hundred fifty".