163440304834 has 8 divisors (see below), whose sum is σ = 245162319948. Its totient is φ = 81719531520.

The previous prime is 163440304831. The next prime is 163440304873. The reversal of 163440304834 is 438403044361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 87999442609 + 75440862225 = 296647^2 + 274665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (163440304831) 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, 162994 + ... + 594514.

Almost surely, 2^163440304834 is an apocalyptic number.

163440304834 is a deficient number, since it is larger than the sum of its proper divisors (81722015114).

163440304834 is a wasteful number, since it uses less digits than its factorization.

163440304834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620900.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 163440304834 in words is "one hundred sixty-three billion, four hundred forty million, three hundred four thousand, eight hundred thirty-four".