388087013 has 2 divisors, whose sum is σ = 388087014. Its totient is φ = 388087012.

The previous prime is 388087003. The next prime is 388087031. The reversal of 388087013 is 310780883.

Together with next prime (388087031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330585124 + 57501889 = 18182^2 + 7583^2 .

It is a cyclic number.

It is not a de Polignac number, because 388087013 - 2⁶ = 388086949 is a prime.

It is a super-3 number, since 3×388087013³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388087003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194043506 + 194043507.

It is an arithmetic number, because the mean of its divisors is an integer number (194043507).

Almost surely, 2^388087013 is an apocalyptic number.

It is an amenable number.

388087013 is a deficient number, since it is larger than the sum of its proper divisors (1).

388087013 is an equidigital number, since it uses as much as digits as its factorization.

388087013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 388087013 is about 19699.9241876714. The cubic root of 388087013 is about 729.4178213149.

It can be divided in two parts, 3880870 and 13, that added together give a palindrome (3880883).

The spelling of 388087013 in words is "three hundred eighty-eight million, eighty-seven thousand, thirteen".