4193938958181 has 64 divisors (see below), whose sum is σ = 6473189031936. Its totient is φ = 2365832448000.

The previous prime is 4193938958147. The next prime is 4193938958191. The reversal of 4193938958181 is 1818598393914.

It is not a de Polignac number, because 4193938958181 - 2¹⁸ = 4193938696037 is a prime.

It is a super-2 number, since 2×4193938958181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4193938958191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1157585536 + ... + 1157589158.

It is an arithmetic number, because the mean of its divisors is an integer number (101143578624).

Almost surely, 2^{4193938958181} is an apocalyptic number.

It is an amenable number.

4193938958181 is a deficient number, since it is larger than the sum of its proper divisors (2279250073755).

4193938958181 is a wasteful number, since it uses less digits than its factorization.

4193938958181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5802.

The product of its digits is 67184640, while the sum is 69.

The spelling of 4193938958181 in words is "four trillion, one hundred ninety-three billion, nine hundred thirty-eight million, nine hundred fifty-eight thousand, one hundred eighty-one".