163073155 has 32 divisors (see below), whose sum is σ = 228925440. Its totient is φ = 109213440.

The previous prime is 163073153. The next prime is 163073189. The reversal of 163073155 is 551370361.

It is not a de Polignac number, because 163073155 - 2¹ = 163073153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163073153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340206 + ... + 340684.

It is an arithmetic number, because the mean of its divisors is an integer number (7153920).

Almost surely, 2^163073155 is an apocalyptic number.

163073155 is a deficient number, since it is larger than the sum of its proper divisors (65852285).

163073155 is a wasteful number, since it uses less digits than its factorization.

163073155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 163073155 is about 12770.0099843344. The cubic root of 163073155 is about 546.3372654073.

The spelling of 163073155 in words is "one hundred sixty-three million, seventy-three thousand, one hundred fifty-five".