163610020 has 36 divisors (see below), whose sum is σ = 399678300. Its totient is φ = 56094528.

The previous prime is 163610003. The next prime is 163610021. The reversal of 163610020 is 20016361.

163610020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75099556 + 88510464 = 8666^2 + 9408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163610020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163610021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82495 + ... + 84454.

It is an arithmetic number, because the mean of its divisors is an integer number (11102175).

Almost surely, 2^163610020 is an apocalyptic number.

163610020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163610020 is an abundant number, since it is smaller than the sum of its proper divisors (236068280).

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

163610020 is a wasteful number, since it uses less digits than its factorization.

163610020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166972 (or 166963 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 163610020 is about 12791.0132514981. The cubic root of 163610020 is about 546.9361542278.

Adding to 163610020 its reverse (20016361), we get a palindrome (183626381).

The spelling of 163610020 in words is "one hundred sixty-three million, six hundred ten thousand, twenty".