163040452 has 6 divisors (see below), whose sum is σ = 285320798. Its totient is φ = 81520224.

The previous prime is 163040401. The next prime is 163040473. The reversal of 163040452 is 254040361.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 69696 = 12766^2 + 264^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20380053 + ... + 20380060.

Almost surely, 2^163040452 is an apocalyptic number.

It is an amenable number.

163040452 is a deficient number, since it is larger than the sum of its proper divisors (122280346).

163040452 is a wasteful number, since it uses less digits than its factorization.

163040452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40760117 (or 40760115 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 163040452 is about 12768.7294591122. The cubic root of 163040452 is about 546.3007417950.

Subtracting 163040452 from its reverse (254040361), we obtain a palindrome (90999909).

The spelling of 163040452 in words is "one hundred sixty-three million, forty thousand, four hundred fifty-two".