2138934037 has 2 divisors, whose sum is σ = 2138934038. Its totient is φ = 2138934036.

The previous prime is 2138934019. The next prime is 2138934047. The reversal of 2138934037 is 7304398312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2042226481 + 96707556 = 45191^2 + 9834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138934037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2138934047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069467018 + 1069467019.

It is an arithmetic number, because the mean of its divisors is an integer number (1069467019).

Almost surely, 2^2138934037 is an apocalyptic number.

It is an amenable number.

2138934037 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138934037 is an equidigital number, since it uses as much as digits as its factorization.

2138934037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 2138934037 is about 46248.6111899590. The cubic root of 2138934037 is about 1288.4447408782. Note that the first 3 decimals are identical.

The spelling of 2138934037 in words is "two billion, one hundred thirty-eight million, nine hundred thirty-four thousand, thirty-seven".