163490026933 has 2 divisors, whose sum is σ = 163490026934. Its totient is φ = 163490026932.

The previous prime is 163490026891. The next prime is 163490026937. The reversal of 163490026933 is 339620094361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159298370884 + 4191656049 = 399122^2 + 64743^2 .

It is a cyclic number.

It is not a de Polignac number, because 163490026933 - 2¹⁷ = 163489895861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163490026937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81745013466 + 81745013467.

It is an arithmetic number, because the mean of its divisors is an integer number (81745013467).

Almost surely, 2^163490026933 is an apocalyptic number.

It is an amenable number.

163490026933 is a deficient number, since it is larger than the sum of its proper divisors (1).

163490026933 is an equidigital number, since it uses as much as digits as its factorization.

163490026933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 46.

The spelling of 163490026933 in words is "one hundred sixty-three billion, four hundred ninety million, twenty-six thousand, nine hundred thirty-three".