2378478017 has 2 divisors, whose sum is σ = 2378478018. Its totient is φ = 2378478016.

The previous prime is 2378478013. The next prime is 2378478029. The reversal of 2378478017 is 7108748732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1385030656 + 993447361 = 37216^2 + 31519^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378478017 - 2² = 2378478013 is a prime.

It is not a weakly prime, because it can be changed into another prime (2378478013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1189239008 + 1189239009.

It is an arithmetic number, because the mean of its divisors is an integer number (1189239009).

Almost surely, 2^2378478017 is an apocalyptic number.

It is an amenable number.

2378478017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2378478017 is an equidigital number, since it uses as much as digits as its factorization.

2378478017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 2378478017 is about 48769.6423710488. The cubic root of 2378478017 is about 1334.8517871435.

The spelling of 2378478017 in words is "two billion, three hundred seventy-eight million, four hundred seventy-eight thousand, seventeen".