9016919993 has 2 divisors, whose sum is σ = 9016919994. Its totient is φ = 9016919992.

The previous prime is 9016919987. The next prime is 9016920007. The reversal of 9016919993 is 3999196109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4829277049 + 4187642944 = 69493^2 + 64712^2 .

It is an emirp because it is prime and its reverse (3999196109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9016919993 - 2⁶ = 9016919929 is a prime.

It is not a weakly prime, because it can be changed into another prime (9016919953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4508459996 + 4508459997.

It is an arithmetic number, because the mean of its divisors is an integer number (4508459997).

Almost surely, 2^9016919993 is an apocalyptic number.

It is an amenable number.

9016919993 is a deficient number, since it is larger than the sum of its proper divisors (1).

9016919993 is an equidigital number, since it uses as much as digits as its factorization.

9016919993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1062882, while the sum is 56.

The square root of 9016919993 is about 94957.4641247332. The cubic root of 9016919993 is about 2081.3865256892.

The spelling of 9016919993 in words is "nine billion, sixteen million, nine hundred nineteen thousand, nine hundred ninety-three".