388281601 has 2 divisors, whose sum is σ = 388281602. Its totient is φ = 388281600.

The previous prime is 388281599. The next prime is 388281613. The reversal of 388281601 is 106182883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375429376 + 12852225 = 19376^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 388281601 - 2¹ = 388281599 is a prime.

Together with 388281599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (388281661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194140800 + 194140801.

It is an arithmetic number, because the mean of its divisors is an integer number (194140801).

Almost surely, 2^388281601 is an apocalyptic number.

It is an amenable number.

388281601 is a deficient number, since it is larger than the sum of its proper divisors (1).

388281601 is an equidigital number, since it uses as much as digits as its factorization.

388281601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 388281601 is about 19704.8623694762. The cubic root of 388281601 is about 729.5397117111.

The spelling of 388281601 in words is "three hundred eighty-eight million, two hundred eighty-one thousand, six hundred one".