2138458072149 has 12 divisors (see below), whose sum is σ = 3530153008096. Its totient is φ = 1221976041192.

The previous prime is 2138458072147. The next prime is 2138458072171. The reversal of 2138458072149 is 9412708548312.

2138458072149 is a `hidden beast` number, since 2 + 1 + 38 + 4 + 580 + 7 + 21 + 4 + 9 = 666.

It is not a de Polignac number, because 2138458072149 - 2¹ = 2138458072147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2138458072095 and 2138458072104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138458072141) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16971889399 + ... + 16971889524.

Almost surely, 2^{2138458072149} is an apocalyptic number.

It is an amenable number.

2138458072149 is a deficient number, since it is larger than the sum of its proper divisors (1391694935947).

2138458072149 is a wasteful number, since it uses less digits than its factorization.

2138458072149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33943778936 (or 33943778933 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 2138458072149 in words is "two trillion, one hundred thirty-eight billion, four hundred fifty-eight million, seventy-two thousand, one hundred forty-nine".