2381656173438 has 32 divisors (see below), whose sum is σ = 4917173437440. Its totient is φ = 768244020480.

The previous prime is 2381656173349. The next prime is 2381656173467. The reversal of 2381656173438 is 8343716561832.

2381656173438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2381656173438² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4405093 + ... + 4916111.

It is an arithmetic number, because the mean of its divisors is an integer number (153661669920).

Almost surely, 2^{2381656173438} is an apocalyptic number.

2381656173438 is an abundant number, since it is smaller than the sum of its proper divisors (2535517264002).

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

2381656173438 is a wasteful number, since it uses less digits than its factorization.

2381656173438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536112.

The product of its digits is 17418240, while the sum is 57.

The spelling of 2381656173438 in words is "two trillion, three hundred eighty-one billion, six hundred fifty-six million, one hundred seventy-three thousand, four hundred thirty-eight".