163203940 has 12 divisors (see below), whose sum is σ = 342728316. Its totient is φ = 65281568.

The previous prime is 163203919. The next prime is 163203941. The reversal of 163203940 is 49302361.

163203940 is digitally balanced in base 2, 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 29246464 + 133957476 = 5408^2 + 11574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163203899 and 163203908.

It is not an unprimeable number, because it can be changed into a prime (163203941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4080079 + ... + 4080118.

It is an arithmetic number, because the mean of its divisors is an integer number (28560693).

Almost surely, 2^163203940 is an apocalyptic number.

163203940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163203940 is an abundant number, since it is smaller than the sum of its proper divisors (179524376).

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

163203940 is a wasteful number, since it uses less digits than its factorization.

163203940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160206 (or 8160204 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 163203940 is about 12775.1297449380. The cubic root of 163203940 is about 546.4832809098.

The spelling of 163203940 in words is "one hundred sixty-three million, two hundred three thousand, nine hundred forty".