163953996 has 24 divisors (see below), whose sum is σ = 382853184. Its totient is φ = 54609360.

The previous prime is 163953991. The next prime is 163954019. The reversal of 163953996 is 699359361.

It is a super-3 number, since 3×163953996³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (163953991) 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, 13791 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (15952216).

Almost surely, 2^163953996 is an apocalyptic number.

It is an amenable number.

163953996 is an abundant number, since it is smaller than the sum of its proper divisors (218899188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163953996 is a wasteful number, since it uses less digits than its factorization.

163953996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501 (or 10499 counting only the distinct ones).

The product of its digits is 1180980, while the sum is 51.

The square root of 163953996 is about 12804.4521944517. The cubic root of 163953996 is about 547.3191813390.

The spelling of 163953996 in words is "one hundred sixty-three million, nine hundred fifty-three thousand, nine hundred ninety-six".