3138832840 has 128 divisors (see below), whose sum is σ = 8521873920. Its totient is φ = 1025049600.

The previous prime is 3138832811. The next prime is 3138832847. The reversal of 3138832840 is 482388313.

3138832840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3138832793 and 3138832802.

It is not an unprimeable number, because it can be changed into a prime (3138832847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204225 + ... + 219055.

It is an arithmetic number, because the mean of its divisors is an integer number (66577140).

Almost surely, 2^3138832840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138832840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4260936960).

3138832840 is an abundant number, since it is smaller than the sum of its proper divisors (5383041080).

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

3138832840 is a wasteful number, since it uses less digits than its factorization.

3138832840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14903 (or 14899 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 3138832840 is about 56025.2875048402. The cubic root of 3138832840 is about 1464.1628923332.

The spelling of 3138832840 in words is "three billion, one hundred thirty-eight million, eight hundred thirty-two thousand, eight hundred forty".