163507033 has 4 divisors (see below), whose sum is σ = 167926180. Its totient is φ = 159087888.

The previous prime is 163506991. The next prime is 163507073. The reversal of 163507033 is 330705361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 133564249 + 29942784 = 11557^2 + 5472^2 .

It is a cyclic number.

It is not a de Polignac number, because 163507033 - 2²¹ = 161409881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163506992 and 163507010.

It is not an unprimeable number, because it can be changed into a prime (163507073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2209518 + ... + 2209591.

It is an arithmetic number, because the mean of its divisors is an integer number (41981545).

Almost surely, 2^163507033 is an apocalyptic number.

It is an amenable number.

163507033 is a deficient number, since it is larger than the sum of its proper divisors (4419147).

163507033 is an equidigital number, since it uses as much as digits as its factorization.

163507033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419146.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 163507033 is about 12786.9868616496. The cubic root of 163507033 is about 546.8213708412.

The spelling of 163507033 in words is "one hundred sixty-three million, five hundred seven thousand, thirty-three".