806143937 has 2 divisors, whose sum is σ = 806143938. Its totient is φ = 806143936.

The previous prime is 806143883. The next prime is 806143957. The reversal of 806143937 is 739341608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697171216 + 108972721 = 26404^2 + 10439^2 .

It is a cyclic number.

It is not a de Polignac number, because 806143937 - 2⁶ = 806143873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806143894 and 806143903.

It is not a weakly prime, because it can be changed into another prime (806143957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403071968 + 403071969.

It is an arithmetic number, because the mean of its divisors is an integer number (403071969).

Almost surely, 2^806143937 is an apocalyptic number.

It is an amenable number.

806143937 is a deficient number, since it is larger than the sum of its proper divisors (1).

806143937 is an equidigital number, since it uses as much as digits as its factorization.

806143937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 806143937 is about 28392.6740022845. The cubic root of 806143937 is about 930.6881779632.

The spelling of 806143937 in words is "eight hundred six million, one hundred forty-three thousand, nine hundred thirty-seven".