163953955 has 8 divisors (see below), whose sum is σ = 214630704. Its totient is φ = 119239200.

The previous prime is 163953949. The next prime is 163953961. The reversal of 163953955 is 559359361.

It is an interprime number because it is at equal distance from previous prime (163953949) and next prime (163953961).

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

It is not a de Polignac number, because 163953955 - 2¹⁵ = 163921187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490436 + ... + 1490545.

It is an arithmetic number, because the mean of its divisors is an integer number (26828838).

Almost surely, 2^163953955 is an apocalyptic number.

163953955 is a deficient number, since it is larger than the sum of its proper divisors (50676749).

163953955 is a wasteful number, since it uses less digits than its factorization.

163953955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980997.

The product of its digits is 546750, while the sum is 46.

The square root of 163953955 is about 12804.4505934460. The cubic root of 163953955 is about 547.3191357163.

The spelling of 163953955 in words is "one hundred sixty-three million, nine hundred fifty-three thousand, nine hundred fifty-five".