890863816319 has 2 divisors, whose sum is σ = 890863816320. Its totient is φ = 890863816318.

The previous prime is 890863816307. The next prime is 890863816343. The reversal of 890863816319 is 913618368098.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890863816319 is a prime.

It is a super-2 number, since 2×890863816319² (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 (890863813319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445431908159 + 445431908160.

It is an arithmetic number, because the mean of its divisors is an integer number (445431908160).

Almost surely, 2^890863816319 is an apocalyptic number.

890863816319 is a deficient number, since it is larger than the sum of its proper divisors (1).

890863816319 is an equidigital number, since it uses as much as digits as its factorization.

890863816319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13436928, while the sum is 62.

The spelling of 890863816319 in words is "eight hundred ninety billion, eight hundred sixty-three million, eight hundred sixteen thousand, three hundred nineteen".