163432845 has 12 divisors (see below), whose sum is σ = 283283676. Its totient is φ = 87164160.

The previous prime is 163432831. The next prime is 163432853. The reversal of 163432845 is 548234361.

It can be written as a sum of positive squares in 2 ways, for example, as 22155849 + 141276996 = 4707^2 + 11886^2 .

It is not a de Polignac number, because 163432845 - 2⁹ = 163432333 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1815876 + ... + 1815965.

It is an arithmetic number, because the mean of its divisors is an integer number (23606973).

Almost surely, 2^163432845 is an apocalyptic number.

163432845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163432845 is a deficient number, since it is larger than the sum of its proper divisors (119850831).

163432845 is a wasteful number, since it uses less digits than its factorization.

163432845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631852 (or 3631849 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 163432845 is about 12784.0856145444. The cubic root of 163432845 is about 546.7386552943.

The spelling of 163432845 in words is "one hundred sixty-three million, four hundred thirty-two thousand, eight hundred forty-five".