2138002138 has 16 divisors (see below), whose sum is σ = 3242112840. Its totient is φ = 1057320000.

The previous prime is 2138002109. The next prime is 2138002211. The reversal of 2138002138 is 8312008312.

It can be written as a sum of positive squares in 4 ways, for example, as 2072343529 + 65658609 = 45523^2 + 8103^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210988 + ... + 220888.

Almost surely, 2^2138002138 is an apocalyptic number.

2138002138 is a deficient number, since it is larger than the sum of its proper divisors (1104110702).

2138002138 is a wasteful number, since it uses less digits than its factorization.

2138002138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11073.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2138002138 is about 46238.5352060378. The cubic root of 2138002138 is about 1288.2575955117.

It can be divided in two parts, 213800 and 2138, that multiplied together give a square (457104400 = 21380²).

The spelling of 2138002138 in words is "two billion, one hundred thirty-eight million, two thousand, one hundred thirty-eight".