163801343940 has 192 divisors, whose sum is σ = 505920957696. Its totient is φ = 39342901248.

The previous prime is 163801343929. The next prime is 163801343969. The reversal of 163801343940 is 49343108361.

163801343940 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163801343892 and 163801343901.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46048642 + ... + 46052198.

It is an arithmetic number, because the mean of its divisors is an integer number (2635004988).

Almost surely, 2^163801343940 is an apocalyptic number.

163801343940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163801343940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252960478848).

163801343940 is an abundant number, since it is smaller than the sum of its proper divisors (342119613756).

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

163801343940 is a wasteful number, since it uses less digits than its factorization.

163801343940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998 (or 4996 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 163801343940 in words is "one hundred sixty-three billion, eight hundred one million, three hundred forty-three thousand, nine hundred forty".