4118687197 has 2 divisors, whose sum is σ = 4118687198. Its totient is φ = 4118687196.

The previous prime is 4118687191. The next prime is 4118687201. The reversal of 4118687197 is 7917868114.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2487415876 + 1631271321 = 49874^2 + 40389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4118687197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4118687191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2059343598 + 2059343599.

It is an arithmetic number, because the mean of its divisors is an integer number (2059343599).

Almost surely, 2^4118687197 is an apocalyptic number.

It is an amenable number.

4118687197 is a deficient number, since it is larger than the sum of its proper divisors (1).

4118687197 is an equidigital number, since it uses as much as digits as its factorization.

4118687197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 52.

The square root of 4118687197 is about 64176.9989715942. The cubic root of 4118687197 is about 1602.9486247787.

The spelling of 4118687197 in words is "four billion, one hundred eighteen million, six hundred eighty-seven thousand, one hundred ninety-seven".