3940043936185 has 16 divisors (see below), whose sum is σ = 5638423124736. Its totient is φ = 2584277264448.

The previous prime is 3940043936183. The next prime is 3940043936201. The reversal of 3940043936185 is 5816393400493.

It is a cyclic number.

It is not a de Polignac number, because 3940043936185 - 2¹ = 3940043936183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940043936183) 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, 2447231454 + ... + 2447233063.

It is an arithmetic number, because the mean of its divisors is an integer number (352401445296).

Almost surely, 2^{3940043936185} is an apocalyptic number.

3940043936185 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3940043936185 is a deficient number, since it is larger than the sum of its proper divisors (1698379188551).

3940043936185 is a wasteful number, since it uses less digits than its factorization.

3940043936185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4894464552.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 3940043936185 in words is "three trillion, nine hundred forty billion, forty-three million, nine hundred thirty-six thousand, one hundred eighty-five".