2254403981 has 2 divisors, whose sum is σ = 2254403982. Its totient is φ = 2254403980.

The previous prime is 2254403947. The next prime is 2254404037. The reversal of 2254403981 is 1893044522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1843328356 + 411075625 = 42934^2 + 20275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2254403981 is a prime.

It is a super-2 number, since 2×2254403981² = 10164674619097296722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2254402981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1127201990 + 1127201991.

It is an arithmetic number, because the mean of its divisors is an integer number (1127201991).

Almost surely, 2^2254403981 is an apocalyptic number.

It is an amenable number.

2254403981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2254403981 is an equidigital number, since it uses as much as digits as its factorization.

2254403981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2254403981 is about 47480.5642447518. The cubic root of 2254403981 is about 1311.2250803045.

The spelling of 2254403981 in words is "two billion, two hundred fifty-four million, four hundred three thousand, nine hundred eighty-one".