2179288047389 has 2 divisors, whose sum is σ = 2179288047390. Its totient is φ = 2179288047388.

The previous prime is 2179288047371. The next prime is 2179288047413. The reversal of 2179288047389 is 9837408829712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110684132100 + 1068603915289 = 1053890^2 + 1033733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2179288047389 - 2²⁸ = 2179019611933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2179288047319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089644023694 + 1089644023695.

It is an arithmetic number, because the mean of its divisors is an integer number (1089644023695).

Almost surely, 2^{2179288047389} is an apocalyptic number.

It is an amenable number.

2179288047389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179288047389 is an equidigital number, since it uses as much as digits as its factorization.

2179288047389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 2179288047389 in words is "two trillion, one hundred seventy-nine billion, two hundred eighty-eight million, forty-seven thousand, three hundred eighty-nine".