163170649 has 2 divisors, whose sum is σ = 163170650. Its totient is φ = 163170648.

The previous prime is 163170563. The next prime is 163170677. The reversal of 163170649 is 946071361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 44796249 = 10880^2 + 6693^2 .

It is a cyclic number.

It is not a de Polignac number, because 163170649 - 2¹⁵ = 163137881 is a prime.

It is not a weakly prime, because it can be changed into another prime (163171649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81585324 + 81585325.

It is an arithmetic number, because the mean of its divisors is an integer number (81585325).

Almost surely, 2^163170649 is an apocalyptic number.

It is an amenable number.

163170649 is a deficient number, since it is larger than the sum of its proper divisors (1).

163170649 is an equidigital number, since it uses as much as digits as its factorization.

163170649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 163170649 is about 12773.8267171588. The cubic root of 163170649 is about 546.4461204261.

The spelling of 163170649 in words is "one hundred sixty-three million, one hundred seventy thousand, six hundred forty-nine".