1391392641289 has 8 divisors (see below), whose sum is σ = 1590171802688. Its totient is φ = 1192615675920.

The previous prime is 1391392641281. The next prime is 1391392641299. The reversal of 1391392641289 is 9821462931931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1391392641289 - 2³ = 1391392641281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1391392641281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165774 + ... + 2035144.

It is an arithmetic number, because the mean of its divisors is an integer number (198771475336).

Almost surely, 2^{1391392641289} is an apocalyptic number.

It is an amenable number.

1391392641289 is a deficient number, since it is larger than the sum of its proper divisors (198779161399).

1391392641289 is an equidigital number, since it uses as much as digits as its factorization.

1391392641289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098015.

The product of its digits is 5038848, while the sum is 58.

The spelling of 1391392641289 in words is "one trillion, three hundred ninety-one billion, three hundred ninety-two million, six hundred forty-one thousand, two hundred eighty-nine".