3888655997 has 2 divisors, whose sum is σ = 3888655998. Its totient is φ = 3888655996.

The previous prime is 3888655993. The next prime is 3888656003. The reversal of 3888655997 is 7995568883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3797147641 + 91508356 = 61621^2 + 9566^2 .

It is a cyclic number.

It is not a de Polignac number, because 3888655997 - 2² = 3888655993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3888655993) 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, 1944327998 + 1944327999.

It is an arithmetic number, because the mean of its divisors is an integer number (1944327999).

Almost surely, 2^3888655997 is an apocalyptic number.

It is an amenable number.

3888655997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3888655997 is an equidigital number, since it uses as much as digits as its factorization.

3888655997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 68.

The square root of 3888655997 is about 62359.0891290115. The cubic root of 3888655997 is about 1572.5332676885.

The spelling of 3888655997 in words is "three billion, eight hundred eighty-eight million, six hundred fifty-five thousand, nine hundred ninety-seven".