2138203018387 has 2 divisors, whose sum is σ = 2138203018388. Its totient is φ = 2138203018386.

The previous prime is 2138203018333. The next prime is 2138203018507. The reversal of 2138203018387 is 7838103028312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138203018387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2138203018307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069101509193 + 1069101509194.

It is an arithmetic number, because the mean of its divisors is an integer number (1069101509194).

Almost surely, 2^{2138203018387} is an apocalyptic number.

2138203018387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138203018387 is an equidigital number, since it uses as much as digits as its factorization.

2138203018387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 2138203018387 in words is "two trillion, one hundred thirty-eight billion, two hundred three million, eighteen thousand, three hundred eighty-seven".