928087581391 has 2 divisors, whose sum is σ = 928087581392. Its totient is φ = 928087581390.

The previous prime is 928087581383. The next prime is 928087581419. The reversal of 928087581391 is 193185780829.

It is a weak prime.

It is an emirp because it is prime and its reverse (193185780829) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 928087581391 - 2³ = 928087581383 is a prime.

It is a super-2 number, since 2×928087581391² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (928087581331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 464043790695 + 464043790696.

It is an arithmetic number, because the mean of its divisors is an integer number (464043790696).

Almost surely, 2^928087581391 is an apocalyptic number.

928087581391 is a deficient number, since it is larger than the sum of its proper divisors (1).

928087581391 is an equidigital number, since it uses as much as digits as its factorization.

928087581391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 61.

The spelling of 928087581391 in words is "nine hundred twenty-eight billion, eighty-seven million, five hundred eighty-one thousand, three hundred ninety-one".