2289730381 has 2 divisors, whose sum is σ = 2289730382. Its totient is φ = 2289730380.

The previous prime is 2289730309. The next prime is 2289730393. The reversal of 2289730381 is 1830379822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1449020356 + 840710025 = 38066^2 + 28995^2 .

It is a cyclic number.

It is not a de Polignac number, because 2289730381 - 2⁷ = 2289730253 is a prime.

It is a super-2 number, since 2×2289730381² = 10485730435348810322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2289730981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144865190 + 1144865191.

It is an arithmetic number, because the mean of its divisors is an integer number (1144865191).

Almost surely, 2^2289730381 is an apocalyptic number.

It is an amenable number.

2289730381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289730381 is an equidigital number, since it uses as much as digits as its factorization.

2289730381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 2289730381 is about 47851.1272698983. The cubic root of 2289730381 is about 1318.0385585833.

The spelling of 2289730381 in words is "two billion, two hundred eighty-nine million, seven hundred thirty thousand, three hundred eighty-one".