163468291538 has 16 divisors (see below), whose sum is σ = 249324868824. Its totient is φ = 80361106560.

The previous prime is 163468291507. The next prime is 163468291561. The reversal of 163468291538 is 835192864361.

163468291538 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 4 ways, for example, as 125693648089 + 37774643449 = 354533^2 + 194357^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22406 + ... + 572222.

Almost surely, 2^163468291538 is an apocalyptic number.

163468291538 is a deficient number, since it is larger than the sum of its proper divisors (85856577286).

163468291538 is a wasteful number, since it uses less digits than its factorization.

163468291538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552317.

The product of its digits is 7464960, while the sum is 56.

The spelling of 163468291538 in words is "one hundred sixty-three billion, four hundred sixty-eight million, two hundred ninety-one thousand, five hundred thirty-eight".