163950971 has 8 divisors (see below), whose sum is σ = 170886144. Its totient is φ = 157118760.

The previous prime is 163950967. The next prime is 163950973. The reversal of 163950971 is 179059361.

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 163950971 - 2² = 163950967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163950973) 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, 22481 + ... + 28866.

It is an arithmetic number, because the mean of its divisors is an integer number (21360768).

Almost surely, 2^163950971 is an apocalyptic number.

163950971 is a deficient number, since it is larger than the sum of its proper divisors (6935173).

163950971 is a wasteful number, since it uses less digits than its factorization.

163950971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51481.

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 163950971 is about 12804.3340709308. The cubic root of 163950971 is about 547.3158152510.

The spelling of 163950971 in words is "one hundred sixty-three million, nine hundred fifty thousand, nine hundred seventy-one".