163955407 has 8 divisors (see below), whose sum is σ = 204412032. Its totient is φ = 127757400.

The previous prime is 163955383. The next prime is 163955419. The reversal of 163955407 is 704559361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163955407 - 2¹¹ = 163953359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163955407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163956407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1064569 + ... + 1064722.

It is an arithmetic number, because the mean of its divisors is an integer number (25551504).

Almost surely, 2^163955407 is an apocalyptic number.

163955407 is a deficient number, since it is larger than the sum of its proper divisors (40456625).

163955407 is a wasteful number, since it uses less digits than its factorization.

163955407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129309.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 163955407 is about 12804.5072923561. The cubic root of 163955407 is about 547.3207514240.

The spelling of 163955407 in words is "one hundred sixty-three million, nine hundred fifty-five thousand, four hundred seven".