388136213 has 8 divisors (see below), whose sum is σ = 401081856. Its totient is φ = 375217200.

The previous prime is 388136153. The next prime is 388136251. The reversal of 388136213 is 312631883.

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

It is a cyclic number.

It is not a de Polignac number, because 388136213 - 2²⁶ = 321027349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388136263) 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, 25520 + ... + 37782.

It is an arithmetic number, because the mean of its divisors is an integer number (50135232).

Almost surely, 2^388136213 is an apocalyptic number.

It is an amenable number.

388136213 is a deficient number, since it is larger than the sum of its proper divisors (12945643).

388136213 is a wasteful number, since it uses less digits than its factorization.

388136213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315.

The product of its digits is 20736, while the sum is 35.

The square root of 388136213 is about 19701.1728838666. The cubic root of 388136213 is about 729.4486441624.

The spelling of 388136213 in words is "three hundred eighty-eight million, one hundred thirty-six thousand, two hundred thirteen".