163934442642 has 16 divisors (see below), whose sum is σ = 332762451552. Its totient is φ = 53829219840.

The previous prime is 163934442541. The next prime is 163934442643. The reversal of 163934442642 is 246244439361.

It is a junction number, because it is equal to n+sod(n) for n = 163934442591 and 163934442600.

It is not an unprimeable number, because it can be changed into a prime (163934442643) 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, 203898159 + ... + 203898962.

It is an arithmetic number, because the mean of its divisors is an integer number (20797653222).

Almost surely, 2^163934442642 is an apocalyptic number.

163934442642 is an abundant number, since it is smaller than the sum of its proper divisors (168828008910).

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

163934442642 is a wasteful number, since it uses less digits than its factorization.

163934442642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407797193.

The product of its digits is 2985984, while the sum is 48.

The spelling of 163934442642 in words is "one hundred sixty-three billion, nine hundred thirty-four million, four hundred forty-two thousand, six hundred forty-two".