163901816 has 32 divisors (see below), whose sum is σ = 332972640. Its totient is φ = 75186048.

The previous prime is 163901813. The next prime is 163901819. The reversal of 163901816 is 618109361.

163901816 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 (163901813) and next prime (163901819).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163901813) 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, 12650 + ... + 22086.

It is an arithmetic number, because the mean of its divisors is an integer number (10405395).

Almost surely, 2^163901816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163901816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166486320).

163901816 is an abundant number, since it is smaller than the sum of its proper divisors (169070824).

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

163901816 is a wasteful number, since it uses less digits than its factorization.

163901816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9623 (or 9619 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 163901816 is about 12802.4144597806. The cubic root of 163901816 is about 547.2611119092.

The spelling of 163901816 in words is "one hundred sixty-three million, nine hundred one thousand, eight hundred sixteen".