3940173838 has 16 divisors (see below), whose sum is σ = 6194413440. Its totient is φ = 1876124536.

The previous prime is 3940173833. The next prime is 3940173869. The reversal of 3940173838 is 8383710493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940173833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178228 + ... + 199111.

It is an arithmetic number, because the mean of its divisors is an integer number (387150840).

Almost surely, 2^3940173838 is an apocalyptic number.

3940173838 is a deficient number, since it is larger than the sum of its proper divisors (2254239602).

3940173838 is a wasteful number, since it uses less digits than its factorization.

3940173838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377591.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 3940173838 is about 62770.8040254385. The cubic root of 3940173838 is about 1579.4472560455.

The spelling of 3940173838 in words is "three billion, nine hundred forty million, one hundred seventy-three thousand, eight hundred thirty-eight".