163463491 has 2 divisors, whose sum is σ = 163463492. Its totient is φ = 163463490.

The previous prime is 163463477. The next prime is 163463549. The reversal of 163463491 is 194364361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163463491 - 2²¹ = 161366339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163463491.

It is not a weakly prime, because it can be changed into another prime (163463471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81731745 + 81731746.

It is an arithmetic number, because the mean of its divisors is an integer number (81731746).

Almost surely, 2^163463491 is an apocalyptic number.

163463491 is a deficient number, since it is larger than the sum of its proper divisors (1).

163463491 is an equidigital number, since it uses as much as digits as its factorization.

163463491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 163463491 is about 12785.2841579685. The cubic root of 163463491 is about 546.7728269355.

The spelling of 163463491 in words is "one hundred sixty-three million, four hundred sixty-three thousand, four hundred ninety-one".