1084388345639 has 2 divisors, whose sum is σ = 1084388345640. Its totient is φ = 1084388345638.

The previous prime is 1084388345591. The next prime is 1084388345701. The reversal of 1084388345639 is 9365438834801.

It is an a-pointer prime, because the next prime (1084388345701) can be obtained adding 1084388345639 to its sum of digits (62).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1084388345639 - 2¹⁶ = 1084388280103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1084388345039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542194172819 + 542194172820.

It is an arithmetic number, because the mean of its divisors is an integer number (542194172820).

Almost surely, 2^{1084388345639} is an apocalyptic number.

1084388345639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1084388345639 is an equidigital number, since it uses as much as digits as its factorization.

1084388345639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59719680, while the sum is 62.

The spelling of 1084388345639 in words is "one trillion, eighty-four billion, three hundred eighty-eight million, three hundred forty-five thousand, six hundred thirty-nine".