2078218187 has 2 divisors, whose sum is σ = 2078218188. Its totient is φ = 2078218186.

The previous prime is 2078218171. The next prime is 2078218201. The reversal of 2078218187 is 7818128702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2078218187 - 2⁴ = 2078218171 is a prime.

It is not a weakly prime, because it can be changed into another prime (2078218487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039109093 + 1039109094.

It is an arithmetic number, because the mean of its divisors is an integer number (1039109094).

Almost surely, 2^2078218187 is an apocalyptic number.

2078218187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2078218187 is an equidigital number, since it uses as much as digits as its factorization.

2078218187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 44.

The square root of 2078218187 is about 45587.4784014207. The cubic root of 2078218187 is about 1276.1362547066.

The spelling of 2078218187 in words is "two billion, seventy-eight million, two hundred eighteen thousand, one hundred eighty-seven".