2478358417 has 2 divisors, whose sum is σ = 2478358418. Its totient is φ = 2478358416.

The previous prime is 2478358409. The next prime is 2478358427. The reversal of 2478358417 is 7148538742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2289048336 + 189310081 = 47844^2 + 13759^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478358417 - 2³ = 2478358409 is a prime.

It is a super-2 number, since 2×2478358417² = 12284520886229491778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2478358427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239179208 + 1239179209.

It is an arithmetic number, because the mean of its divisors is an integer number (1239179209).

Almost surely, 2^2478358417 is an apocalyptic number.

It is an amenable number.

2478358417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478358417 is an equidigital number, since it uses as much as digits as its factorization.

2478358417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1505280, while the sum is 49.

The square root of 2478358417 is about 49783.1137736482. The cubic root of 2478358417 is about 1353.2811667401.

The spelling of 2478358417 in words is "two billion, four hundred seventy-eight million, three hundred fifty-eight thousand, four hundred seventeen".