478938095849 has 2 divisors, whose sum is σ = 478938095850. Its totient is φ = 478938095848.

The previous prime is 478938095821. The next prime is 478938095899. The reversal of 478938095849 is 948590839874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331854340624 + 147083755225 = 576068^2 + 383515^2 .

It is a cyclic number.

It is not a de Polignac number, because 478938095849 - 2⁸ = 478938095593 is a prime.

It is a super-2 number, since 2×478938095849² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (478938095899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239469047924 + 239469047925.

It is an arithmetic number, because the mean of its divisors is an integer number (239469047925).

Almost surely, 2^478938095849 is an apocalyptic number.

It is an amenable number.

478938095849 is a deficient number, since it is larger than the sum of its proper divisors (1).

478938095849 is an equidigital number, since it uses as much as digits as its factorization.

478938095849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 627056640, while the sum is 74.

The spelling of 478938095849 in words is "four hundred seventy-eight billion, nine hundred thirty-eight million, ninety-five thousand, eight hundred forty-nine".