163451982 has 16 divisors (see below), whose sum is σ = 327818880. Its totient is φ = 54331512.

The previous prime is 163451969. The next prime is 163451989. The reversal of 163451982 is 289154361.

163451982 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 163451982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163451989) 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, 35788 + ... + 40095.

It is an arithmetic number, because the mean of its divisors is an integer number (20488680).

Almost surely, 2^163451982 is an apocalyptic number.

163451982 is an abundant number, since it is smaller than the sum of its proper divisors (164366898).

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

163451982 is a wasteful number, since it uses less digits than its factorization.

163451982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76247.

The product of its digits is 51840, while the sum is 39.

The square root of 163451982 is about 12784.8340622786. The cubic root of 163451982 is about 546.7599943939.

The spelling of 163451982 in words is "one hundred sixty-three million, four hundred fifty-one thousand, nine hundred eighty-two".