388115901 has 8 divisors (see below), whose sum is σ = 574986560. Its totient is φ = 258743916.

The previous prime is 388115879. The next prime is 388115909. The reversal of 388115901 is 109511883.

It is not a de Polignac number, because 388115901 - 2⁶ = 388115837 is a prime.

It is a super-3 number, since 3×388115901³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388115909) 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, 7187305 + ... + 7187358.

It is an arithmetic number, because the mean of its divisors is an integer number (71873320).

Almost surely, 2^388115901 is an apocalyptic number.

It is an amenable number.

388115901 is a deficient number, since it is larger than the sum of its proper divisors (186870659).

388115901 is a wasteful number, since it uses less digits than its factorization.

388115901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14374672 (or 14374666 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 388115901 is about 19700.6573748187. The cubic root of 388115901 is about 729.4359194033.

The spelling of 388115901 in words is "three hundred eighty-eight million, one hundred fifteen thousand, nine hundred one".