163426651 has 2 divisors, whose sum is σ = 163426652. Its totient is φ = 163426650.

The previous prime is 163426603. The next prime is 163426663. The reversal of 163426651 is 156624361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163426651 - 2⁹ = 163426139 is a prime.

It is not a weakly prime, because it can be changed into another prime (163426691) 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, 81713325 + 81713326.

It is an arithmetic number, because the mean of its divisors is an integer number (81713326).

Almost surely, 2^163426651 is an apocalyptic number.

163426651 is a deficient number, since it is larger than the sum of its proper divisors (1).

163426651 is an equidigital number, since it uses as much as digits as its factorization.

163426651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 163426651 is about 12783.8433579264. The cubic root of 163426651 is about 546.7317481922.

The spelling of 163426651 in words is "one hundred sixty-three million, four hundred twenty-six thousand, six hundred fifty-one".