163338507 has 6 divisors (see below), whose sum is σ = 235933412. Its totient is φ = 108892332.

The previous prime is 163338493. The next prime is 163338509. The reversal of 163338507 is 705833361.

163338507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163338507 - 2⁸ = 163338251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163338509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9074353 + ... + 9074370.

Almost surely, 2^163338507 is an apocalyptic number.

163338507 is a deficient number, since it is larger than the sum of its proper divisors (72594905).

163338507 is a wasteful number, since it uses less digits than its factorization.

163338507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18148729 (or 18148726 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 163338507 is about 12780.3954164181. The cubic root of 163338507 is about 546.6334374425.

The spelling of 163338507 in words is "one hundred sixty-three million, three hundred thirty-eight thousand, five hundred seven".