2378781073 has 2 divisors, whose sum is σ = 2378781074. Its totient is φ = 2378781072.

The previous prime is 2378781047. The next prime is 2378781103. The reversal of 2378781073 is 3701878732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2374320529 + 4460544 = 48727^2 + 2112^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378781073 - 2⁹ = 2378780561 is a prime.

It is not a weakly prime, because it can be changed into another prime (2378781043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1189390536 + 1189390537.

It is an arithmetic number, because the mean of its divisors is an integer number (1189390537).

Almost surely, 2^2378781073 is an apocalyptic number.

It is an amenable number.

2378781073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378781073 is an equidigital number, since it uses as much as digits as its factorization.

2378781073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 2378781073 is about 48772.7492868712. The cubic root of 2378781073 is about 1334.9084785318.

The spelling of 2378781073 in words is "two billion, three hundred seventy-eight million, seven hundred eighty-one thousand, seventy-three".