4163497993 has 2 divisors, whose sum is σ = 4163497994. Its totient is φ = 4163497992.

The previous prime is 4163497991. The next prime is 4163498021. The reversal of 4163497993 is 3997943614.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2171839609 + 1991658384 = 46603^2 + 44628^2 .

It is a cyclic number.

It is not a de Polignac number, because 4163497993 - 2¹ = 4163497991 is a prime.

Together with 4163497991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4163497991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2081748996 + 2081748997.

It is an arithmetic number, because the mean of its divisors is an integer number (2081748997).

Almost surely, 2^4163497993 is an apocalyptic number.

It is an amenable number.

4163497993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4163497993 is an equidigital number, since it uses as much as digits as its factorization.

4163497993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 55.

The square root of 4163497993 is about 64525.1733279346. The cubic root of 4163497993 is about 1608.7409614580.

The spelling of 4163497993 in words is "four billion, one hundred sixty-three million, four hundred ninety-seven thousand, nine hundred ninety-three".