2249930281 has 2 divisors, whose sum is σ = 2249930282. Its totient is φ = 2249930280.

The previous prime is 2249930273. The next prime is 2249930321. The reversal of 2249930281 is 1820399422.

2249930281 = 33540² + 33541².

It is an a-pointer prime, because the next prime (2249930321) can be obtained adding 2249930281 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124998681 + 1124931600 = 33541^2 + 33540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2249930281 - 2³ = 2249930273 is a prime.

It is a super-2 number, since 2×2249930281² = 10124372538721477922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2249930251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1124965140 + 1124965141.

It is an arithmetic number, because the mean of its divisors is an integer number (1124965141).

Almost surely, 2^2249930281 is an apocalyptic number.

2249930281 is the 33541-st centered square number.

It is an amenable number.

2249930281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2249930281 is an equidigital number, since it uses as much as digits as its factorization.

2249930281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2249930281 is about 47433.4299940453. The cubic root of 2249930281 is about 1310.3571624854.

The spelling of 2249930281 in words is "two billion, two hundred forty-nine million, nine hundred thirty thousand, two hundred eighty-one".