163745653 has 2 divisors, whose sum is σ = 163745654. Its totient is φ = 163745652.

The previous prime is 163745599. The next prime is 163745657. The reversal of 163745653 is 356547361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85988529 + 77757124 = 9273^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 163745653 - 2¹³ = 163737461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163745657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81872826 + 81872827.

It is an arithmetic number, because the mean of its divisors is an integer number (81872827).

Almost surely, 2^163745653 is an apocalyptic number.

It is an amenable number.

163745653 is a deficient number, since it is larger than the sum of its proper divisors (1).

163745653 is an equidigital number, since it uses as much as digits as its factorization.

163745653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

The square root of 163745653 is about 12796.3140395975. The cubic root of 163745653 is about 547.0872495004.

The spelling of 163745653 in words is "one hundred sixty-three million, seven hundred forty-five thousand, six hundred fifty-three".