2381952121 has 2 divisors, whose sum is σ = 2381952122. Its totient is φ = 2381952120.

The previous prime is 2381952109. The next prime is 2381952169. The reversal of 2381952121 is 1212591832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2357588025 + 24364096 = 48555^2 + 4936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381952121 - 2¹⁷ = 2381821049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2381922121) 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, 1190976060 + 1190976061.

It is an arithmetic number, because the mean of its divisors is an integer number (1190976061).

Almost surely, 2^2381952121 is an apocalyptic number.

It is an amenable number.

2381952121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381952121 is an equidigital number, since it uses as much as digits as its factorization.

2381952121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 2381952121 is about 48805.2468593286. The cubic root of 2381952121 is about 1335.5013843318.

The spelling of 2381952121 in words is "two billion, three hundred eighty-one million, nine hundred fifty-two thousand, one hundred twenty-one".