1084638258391 has 8 divisors (see below), whose sum is σ = 1109511023040. Its totient is φ = 1059840300288.

The previous prime is 1084638258383. The next prime is 1084638258409. The reversal of 1084638258391 is 1938528364801.

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 1084638258391 - 2³ = 1084638258383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1084638258311) 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 7 ways as a sum of consecutive naturals, for example, 18672306 + ... + 18730303.

It is an arithmetic number, because the mean of its divisors is an integer number (138688877880).

Almost surely, 2^{1084638258391} is an apocalyptic number.

1084638258391 is a deficient number, since it is larger than the sum of its proper divisors (24872764649).

1084638258391 is an equidigital number, since it uses as much as digits as its factorization.

1084638258391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37403273.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 1084638258391 in words is "one trillion, eighty-four billion, six hundred thirty-eight million, two hundred fifty-eight thousand, three hundred ninety-one".