2159138604749 has 16 divisors (see below), whose sum is σ = 2528231892480. Its totient is φ = 1805222970240.

The previous prime is 2159138604653. The next prime is 2159138604761. The reversal of 2159138604749 is 9474068319512.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159138604749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159138604769) 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 in 15 ways as a sum of consecutive naturals, for example, 902387 + ... + 2265519.

It is an arithmetic number, because the mean of its divisors is an integer number (158014493280).

It is a 1-persistent number, because it is pandigital, but 2⋅2159138604749 = 4318277209498 is not.

Almost surely, 2^{2159138604749} is an apocalyptic number.

It is an amenable number.

2159138604749 is a deficient number, since it is larger than the sum of its proper divisors (369093287731).

2159138604749 is a wasteful number, since it uses less digits than its factorization.

2159138604749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368700.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 2159138604749 in words is "two trillion, one hundred fifty-nine billion, one hundred thirty-eight million, six hundred four thousand, seven hundred forty-nine".