163797427 has 2 divisors, whose sum is σ = 163797428. Its totient is φ = 163797426.

The previous prime is 163797391. The next prime is 163797437. The reversal of 163797427 is 724797361.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163797427 is a prime.

It is not a weakly prime, because it can be changed into another prime (163797437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81898713 + 81898714.

It is an arithmetic number, because the mean of its divisors is an integer number (81898714).

Almost surely, 2^163797427 is an apocalyptic number.

163797427 is a deficient number, since it is larger than the sum of its proper divisors (1).

163797427 is an equidigital number, since it uses as much as digits as its factorization.

163797427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 46.

The square root of 163797427 is about 12798.3368841424. The cubic root of 163797427 is about 547.1449037749.

The spelling of 163797427 in words is "one hundred sixty-three million, seven hundred ninety-seven thousand, four hundred twenty-seven".