163282993 has 2 divisors, whose sum is σ = 163282994. Its totient is φ = 163282992.

The previous prime is 163282939. The next prime is 163283027. The reversal of 163282993 is 399282361.

Together with previous prime (163282939) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154330929 + 8952064 = 12423^2 + 2992^2 .

It is a cyclic number.

It is not a de Polignac number, because 163282993 - 2¹⁷ = 163151921 is a prime.

It is a super-3 number, since 3×163282993³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (163280993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81641496 + 81641497.

It is an arithmetic number, because the mean of its divisors is an integer number (81641497).

Almost surely, 2^163282993 is an apocalyptic number.

It is an amenable number.

163282993 is a deficient number, since it is larger than the sum of its proper divisors (1).

163282993 is an equidigital number, since it uses as much as digits as its factorization.

163282993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 163282993 is about 12778.2233898144. The cubic root of 163282993 is about 546.5715021652.

It can be divided in two parts, 16328 and 2993, that added together give a square (19321 = 139²).

The spelling of 163282993 in words is "one hundred sixty-three million, two hundred eighty-two thousand, nine hundred ninety-three".