163745801 has 2 divisors, whose sum is σ = 163745802. Its totient is φ = 163745800.

The previous prime is 163745761. The next prime is 163745807. The reversal of 163745801 is 108547361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136913401 + 26832400 = 11701^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 163745801 - 2²⁶ = 96636937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (163745807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81872900 + 81872901.

It is an arithmetic number, because the mean of its divisors is an integer number (81872901).

Almost surely, 2^163745801 is an apocalyptic number.

It is an amenable number.

163745801 is a deficient number, since it is larger than the sum of its proper divisors (1).

163745801 is an equidigital number, since it uses as much as digits as its factorization.

163745801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 163745801 is about 12796.3198225115. The cubic root of 163745801 is about 547.0874143269.

The spelling of 163745801 in words is "one hundred sixty-three million, seven hundred forty-five thousand, eight hundred one".