163459481 has 2 divisors, whose sum is σ = 163459482. Its totient is φ = 163459480.

The previous prime is 163459427. The next prime is 163459493. The reversal of 163459481 is 184954361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 66259600 = 9859^2 + 8140^2 .

It is a cyclic number.

It is not a de Polignac number, because 163459481 - 2²² = 159265177 is a prime.

It is a super-2 number, since 2×163459481² = 53438003857578722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (163459411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81729740 + 81729741.

It is an arithmetic number, because the mean of its divisors is an integer number (81729741).

Almost surely, 2^163459481 is an apocalyptic number.

It is an amenable number.

163459481 is a deficient number, since it is larger than the sum of its proper divisors (1).

163459481 is an equidigital number, since it uses as much as digits as its factorization.

163459481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The square root of 163459481 is about 12785.1273360886. The cubic root of 163459481 is about 546.7683558516.

The spelling of 163459481 in words is "one hundred sixty-three million, four hundred fifty-nine thousand, four hundred eighty-one".