163403497 has 2 divisors, whose sum is σ = 163403498. Its totient is φ = 163403496.

The previous prime is 163403459. The next prime is 163403519. The reversal of 163403497 is 794304361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144576576 + 18826921 = 12024^2 + 4339^2 .

It is a cyclic number.

It is not a de Polignac number, because 163403497 - 2⁷ = 163403369 is a prime.

It is not a weakly prime, because it can be changed into another prime (163403417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81701748 + 81701749.

It is an arithmetic number, because the mean of its divisors is an integer number (81701749).

Almost surely, 2^163403497 is an apocalyptic number.

It is an amenable number.

163403497 is a deficient number, since it is larger than the sum of its proper divisors (1).

163403497 is an equidigital number, since it uses as much as digits as its factorization.

163403497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 163403497 is about 12782.9377296457. The cubic root of 163403497 is about 546.7059269758.

The spelling of 163403497 in words is "one hundred sixty-three million, four hundred three thousand, four hundred ninety-seven".