2388125821 has 2 divisors, whose sum is σ = 2388125822. Its totient is φ = 2388125820.

The previous prime is 2388125807. The next prime is 2388125851. The reversal of 2388125821 is 1285218832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2342076025 + 46049796 = 48395^2 + 6786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2388125821 - 2²¹ = 2386028669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2388125851) 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, 1194062910 + 1194062911.

It is an arithmetic number, because the mean of its divisors is an integer number (1194062911).

Almost surely, 2^2388125821 is an apocalyptic number.

It is an amenable number.

2388125821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2388125821 is an equidigital number, since it uses as much as digits as its factorization.

2388125821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 40.

The square root of 2388125821 is about 48868.4542522065. The cubic root of 2388125821 is about 1336.6542023314.

The spelling of 2388125821 in words is "two billion, three hundred eighty-eight million, one hundred twenty-five thousand, eight hundred twenty-one".