381938652 has 72 divisors (see below), whose sum is σ = 1004605056. Its totient is φ = 126882288.

The previous prime is 381938651. The next prime is 381938653. The reversal of 381938652 is 256839183.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (381938651) and next prime (381938653).

It is a junction number, because it is equal to n+sod(n) for n = 381938598 and 381938607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381938651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 430153 + ... + 431039.

It is an arithmetic number, because the mean of its divisors is an integer number (13952848).

Almost surely, 2^381938652 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 381938652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502302528).

381938652 is an abundant number, since it is smaller than the sum of its proper divisors (622666404).

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

381938652 is a wasteful number, since it uses less digits than its factorization.

381938652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1335 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 381938652 is about 19543.2508043058. The cubic root of 381938652 is about 725.5453064332.

The spelling of 381938652 in words is "three hundred eighty-one million, nine hundred thirty-eight thousand, six hundred fifty-two".