919065056989 has 2 divisors, whose sum is σ = 919065056990. Its totient is φ = 919065056988.

The previous prime is 919065056983. The next prime is 919065057047. The reversal of 919065056989 is 989650560919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 698486420025 + 220578636964 = 835755^2 + 469658^2 .

It is a cyclic number.

It is not a de Polignac number, because 919065056989 - 2³ = 919065056981 is a prime.

It is a super-2 number, since 2×919065056989² (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 (919065056981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459532528494 + 459532528495.

It is an arithmetic number, because the mean of its divisors is an integer number (459532528495).

Almost surely, 2^919065056989 is an apocalyptic number.

It is an amenable number.

919065056989 is a deficient number, since it is larger than the sum of its proper divisors (1).

919065056989 is an equidigital number, since it uses as much as digits as its factorization.

919065056989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47239200, while the sum is 67.

The spelling of 919065056989 in words is "nine hundred nineteen billion, sixty-five million, fifty-six thousand, nine hundred eighty-nine".