3872143838 has 8 divisors (see below), whose sum is σ = 5824670688. Its totient is φ = 1930586944.

The previous prime is 3872143837. The next prime is 3872143859. The reversal of 3872143838 is 8383412783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3872143838² = 29986995804322740488, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3872143792 and 3872143801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872143831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741606 + ... + 2743017.

It is an arithmetic number, because the mean of its divisors is an integer number (728083836).

Almost surely, 2^3872143838 is an apocalyptic number.

3872143838 is a deficient number, since it is larger than the sum of its proper divisors (1952526850).

3872143838 is a wasteful number, since it uses less digits than its factorization.

3872143838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5484978.

The product of its digits is 774144, while the sum is 47.

The square root of 3872143838 is about 62226.5525157870. The cubic root of 3872143838 is about 1570.3043263090.

The spelling of 3872143838 in words is "three billion, eight hundred seventy-two million, one hundred forty-three thousand, eight hundred thirty-eight".