2371573681 has 2 divisors, whose sum is σ = 2371573682. Its totient is φ = 2371573680.

The previous prime is 2371573679. The next prime is 2371573697. The reversal of 2371573681 is 1863751732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1275632656 + 1095941025 = 35716^2 + 33105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2371573681 - 2¹ = 2371573679 is a prime.

It is a super-2 number, since 2×2371573681² = 11248723448823779522, which contains 22 as substring.

Together with 2371573679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2371573081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1185786840 + 1185786841.

It is an arithmetic number, because the mean of its divisors is an integer number (1185786841).

Almost surely, 2^2371573681 is an apocalyptic number.

It is an amenable number.

2371573681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2371573681 is an equidigital number, since it uses as much as digits as its factorization.

2371573681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 2371573681 is about 48698.8057451104. The cubic root of 2371573681 is about 1333.5589159086.

The spelling of 2371573681 in words is "two billion, three hundred seventy-one million, five hundred seventy-three thousand, six hundred eighty-one".