387638355 has 16 divisors (see below), whose sum is σ = 667931040. Its totient is φ = 190837248.

The previous prime is 387638341. The next prime is 387638357. The reversal of 387638355 is 553836783.

It is not a de Polignac number, because 387638355 - 2¹⁷ = 387507283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387638357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993750 + ... + 994139.

It is an arithmetic number, because the mean of its divisors is an integer number (41745690).

Almost surely, 2^387638355 is an apocalyptic number.

387638355 is a deficient number, since it is larger than the sum of its proper divisors (280292685).

387638355 is a wasteful number, since it uses less digits than its factorization.

387638355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987910.

The product of its digits is 1814400, while the sum is 48.

The square root of 387638355 is about 19688.5335919159. The cubic root of 387638355 is about 729.1366254979.

The spelling of 387638355 in words is "three hundred eighty-seven million, six hundred thirty-eight thousand, three hundred fifty-five".