388157823 has 12 divisors (see below), whose sum is σ = 569864568. Its totient is φ = 254529360.

The previous prime is 388157813. The next prime is 388157827. The reversal of 388157823 is 328751883.

It is not a de Polignac number, because 388157823 - 2⁴ = 388157807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388157827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352965 + ... + 354062.

It is an arithmetic number, because the mean of its divisors is an integer number (47488714).

Almost surely, 2^388157823 is an apocalyptic number.

388157823 is a deficient number, since it is larger than the sum of its proper divisors (181706745).

388157823 is a wasteful number, since it uses less digits than its factorization.

388157823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707094 (or 707091 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 388157823 is about 19701.7213207374. The cubic root of 388157823 is about 729.4621815857.

The spelling of 388157823 in words is "three hundred eighty-eight million, one hundred fifty-seven thousand, eight hundred twenty-three".