2478021089 has 2 divisors, whose sum is σ = 2478021090. Its totient is φ = 2478021088.

The previous prime is 2478021083. The next prime is 2478021131. The reversal of 2478021089 is 9801208742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2402470225 + 75550864 = 49015^2 + 8692^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478021089 - 2⁸ = 2478020833 is a prime.

It is a super-2 number, since 2×2478021089² = 12281177035057491842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2478021083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239010544 + 1239010545.

It is an arithmetic number, because the mean of its divisors is an integer number (1239010545).

Almost surely, 2^2478021089 is an apocalyptic number.

It is an amenable number.

2478021089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478021089 is an equidigital number, since it uses as much as digits as its factorization.

2478021089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2478021089 is about 49779.7256822494. The cubic root of 2478021089 is about 1353.2197658360.

The spelling of 2478021089 in words is "two billion, four hundred seventy-eight million, twenty-one thousand, eighty-nine".