673809442338 has 32 divisors (see below), whose sum is σ = 1366804647936. Its totient is φ = 221425078608.

The previous prime is 673809442337. The next prime is 673809442349. The reversal of 673809442338 is 833244908376.

It is not an unprimeable number, because it can be changed into a prime (673809442331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306820 + ... + 2582447.

It is an arithmetic number, because the mean of its divisors is an integer number (42712645248).

Almost surely, 2^673809442338 is an apocalyptic number.

673809442338 is an abundant number, since it is smaller than the sum of its proper divisors (692995205598).

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

673809442338 is a wasteful number, since it uses less digits than its factorization.

673809442338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889598.

The product of its (nonzero) digits is 20901888, while the sum is 57.

The spelling of 673809442338 in words is "six hundred seventy-three billion, eight hundred nine million, four hundred forty-two thousand, three hundred thirty-eight".