919065026989 has 2 divisors, whose sum is σ = 919065026990. Its totient is φ = 919065026988.

The previous prime is 919065026851. The next prime is 919065027077. The reversal of 919065026989 is 989620560919.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890507406889 + 28557620100 = 943667^2 + 168990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-919065026989 is a prime.

It is a super-2 number, since 2×919065026989² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 919065026989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919065056989) 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 as a sum of consecutive naturals, namely, 459532513494 + 459532513495.

It is an arithmetic number, because the mean of its divisors is an integer number (459532513495).

Almost surely, 2^919065026989 is an apocalyptic number.

It is an amenable number.

919065026989 is a deficient number, since it is larger than the sum of its proper divisors (1).

919065026989 is an equidigital number, since it uses as much as digits as its factorization.

919065026989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18895680, while the sum is 64.

The spelling of 919065026989 in words is "nine hundred nineteen billion, sixty-five million, twenty-six thousand, nine hundred eighty-nine".