2138502119449 has 4 divisors (see below), whose sum is σ = 2139856460560. Its totient is φ = 2137147778340.

The previous prime is 2138502119441. The next prime is 2138502119461. The reversal of 2138502119449 is 9449112058312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2138502119449 - 2³ = 2138502119441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138502119441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677168187 + ... + 677171344.

It is an arithmetic number, because the mean of its divisors is an integer number (534964115140).

Almost surely, 2^{2138502119449} is an apocalyptic number.

It is an amenable number.

2138502119449 is a deficient number, since it is larger than the sum of its proper divisors (1354341111).

2138502119449 is a wasteful number, since it uses less digits than its factorization.

2138502119449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354341110.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 2138502119449 in words is "two trillion, one hundred thirty-eight billion, five hundred two million, one hundred nineteen thousand, four hundred forty-nine".