163956436 has 12 divisors (see below), whose sum is σ = 327912928. Its totient is φ = 70267032.

The previous prime is 163956433. The next prime is 163956439. The reversal of 163956436 is 634659361.

163956436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163956433) and next prime (163956439).

163956436 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 163956392 and 163956401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163956433) 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, 2927766 + ... + 2927821.

Almost surely, 2^163956436 is an apocalyptic number.

It is an amenable number.

163956436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

163956436 is a wasteful number, since it uses less digits than its factorization.

163956436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5855598 (or 5855596 counting only the distinct ones).

The product of its digits is 349920, while the sum is 43.

The square root of 163956436 is about 12804.5474734565. The cubic root of 163956436 is about 547.3218964343.

The spelling of 163956436 in words is "one hundred sixty-three million, nine hundred fifty-six thousand, four hundred thirty-six".