3868155587 has 2 divisors, whose sum is σ = 3868155588. Its totient is φ = 3868155586.

The previous prime is 3868155559. The next prime is 3868155637. The reversal of 3868155587 is 7855518683.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3868155587 - 2¹⁸ = 3867893443 is a prime.

It is a super-3 number, since 3×3868155587³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3868151587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934077793 + 1934077794.

It is an arithmetic number, because the mean of its divisors is an integer number (1934077794).

Almost surely, 2^3868155587 is an apocalyptic number.

3868155587 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868155587 is an equidigital number, since it uses as much as digits as its factorization.

3868155587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064000, while the sum is 56.

The square root of 3868155587 is about 62194.4980444412. The cubic root of 3868155587 is about 1569.7650110116.

The spelling of 3868155587 in words is "three billion, eight hundred sixty-eight million, one hundred fifty-five thousand, five hundred eighty-seven".