387534381 has 8 divisors (see below), whose sum is σ = 556459680. Its totient is φ = 238482672.

The previous prime is 387534353. The next prime is 387534409. The reversal of 387534381 is 183435783.

It is an interprime number because it is at equal distance from previous prime (387534353) and next prime (387534409).

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

It is not a de Polignac number, because 387534381 - 2¹⁰ = 387533357 is a prime.

It is a super-2 number, since 2×387534381² = 300365792914106322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387534311) 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, 4968351 + ... + 4968428.

It is an arithmetic number, because the mean of its divisors is an integer number (69557460).

Almost surely, 2^387534381 is an apocalyptic number.

It is an amenable number.

387534381 is a deficient number, since it is larger than the sum of its proper divisors (168925299).

387534381 is a wasteful number, since it uses less digits than its factorization.

387534381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9936795.

The product of its digits is 241920, while the sum is 42.

The square root of 387534381 is about 19685.8929439332. The cubic root of 387534381 is about 729.0714289647.

It can be divided in two parts, 38753 and 4381, that added together give a palindrome (43134).

The spelling of 387534381 in words is "three hundred eighty-seven million, five hundred thirty-four thousand, three hundred eighty-one".