163040653 has 4 divisors (see below), whose sum is σ = 171621760. Its totient is φ = 154459548.

The previous prime is 163040623. The next prime is 163040663. The reversal of 163040653 is 356040361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356040361 = 157 ⋅2267773.

It is a cyclic number.

It is not a de Polignac number, because 163040653 - 2⁵ = 163040621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163040623) 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 in 3 ways as a sum of consecutive naturals, for example, 4290525 + ... + 4290562.

It is an arithmetic number, because the mean of its divisors is an integer number (42905440).

Almost surely, 2^163040653 is an apocalyptic number.

It is an amenable number.

163040653 is a deficient number, since it is larger than the sum of its proper divisors (8581107).

163040653 is an equidigital number, since it uses as much as digits as its factorization.

163040653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581106.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 163040653 is about 12768.7373299007. The cubic root of 163040653 is about 546.3009662922.

The spelling of 163040653 in words is "one hundred sixty-three million, forty thousand, six hundred fifty-three".