2178436097 has 2 divisors, whose sum is σ = 2178436098. Its totient is φ = 2178436096.

The previous prime is 2178436069. The next prime is 2178436103. The reversal of 2178436097 is 7906348712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2068794256 + 109641841 = 45484^2 + 10471^2 .

It is a cyclic number.

It is not a de Polignac number, because 2178436097 - 2⁶ = 2178436033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2178436397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089218048 + 1089218049.

It is an arithmetic number, because the mean of its divisors is an integer number (1089218049).

Almost surely, 2^2178436097 is an apocalyptic number.

It is an amenable number.

2178436097 is a deficient number, since it is larger than the sum of its proper divisors (1).

2178436097 is an equidigital number, since it uses as much as digits as its factorization.

2178436097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 2178436097 is about 46673.7195539417. The cubic root of 2178436097 is about 1296.3281191205.

The spelling of 2178436097 in words is "two billion, one hundred seventy-eight million, four hundred thirty-six thousand, ninety-seven".