388367138 has 8 divisors (see below), whose sum is σ = 582650832. Its totient is φ = 194150196.

The previous prime is 388367137. The next prime is 388367141. The reversal of 388367138 is 831763883.

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

It is a super-2 number, since 2×388367138² = 301658067756622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388367092 and 388367101.

It is not an unprimeable number, because it can be changed into a prime (388367137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081 + ... + 27947.

It is an arithmetic number, because the mean of its divisors is an integer number (72831354).

Almost surely, 2^388367138 is an apocalyptic number.

388367138 is a deficient number, since it is larger than the sum of its proper divisors (194283694).

388367138 is a wasteful number, since it uses less digits than its factorization.

388367138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33376.

The product of its digits is 580608, while the sum is 47.

The square root of 388367138 is about 19707.0327040882. The cubic root of 388367138 is about 729.5932794107.

The spelling of 388367138 in words is "three hundred eighty-eight million, three hundred sixty-seven thousand, one hundred thirty-eight".