2138934038 has 16 divisors (see below), whose sum is σ = 3290900400. Its totient is φ = 1042238496.

The previous prime is 2138934037. The next prime is 2138934047. The reversal of 2138934038 is 8304398312.

It is a super-3 number, since 3×2138934038³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2138933986 and 2138934004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138934037) 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, 51920 + ... + 83507.

It is an arithmetic number, because the mean of its divisors is an integer number (205681275).

Almost surely, 2^2138934038 is an apocalyptic number.

2138934038 is a deficient number, since it is larger than the sum of its proper divisors (1151966362).

2138934038 is a wasteful number, since it uses less digits than its factorization.

2138934038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135631.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 2138934038 is about 46248.6112007701. The cubic root of 2138934038 is about 1288.4447410790. Note that the first 3 decimals are identical.

The spelling of 2138934038 in words is "two billion, one hundred thirty-eight million, nine hundred thirty-four thousand, thirty-eight".