1392054128639 has 2 divisors, whose sum is σ = 1392054128640. Its totient is φ = 1392054128638.

The previous prime is 1392054128593. The next prime is 1392054128669. The reversal of 1392054128639 is 9368214502931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392054128639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1392054128669) 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, 696027064319 + 696027064320.

It is an arithmetic number, because the mean of its divisors is an integer number (696027064320).

Almost surely, 2^{1392054128639} is an apocalyptic number.

1392054128639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392054128639 is an equidigital number, since it uses as much as digits as its factorization.

1392054128639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 1392054128639 in words is "one trillion, three hundred ninety-two billion, fifty-four million, one hundred twenty-eight thousand, six hundred thirty-nine".