199371487907 has 2 divisors, whose sum is σ = 199371487908. Its totient is φ = 199371487906.

The previous prime is 199371487901. The next prime is 199371487919. The reversal of 199371487907 is 709784173991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199371487907 - 2⁴ = 199371487891 is a prime.

It is not a weakly prime, because it can be changed into another prime (199371487901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99685743953 + 99685743954.

It is an arithmetic number, because the mean of its divisors is an integer number (99685743954).

Almost surely, 2^199371487907 is an apocalyptic number.

199371487907 is a deficient number, since it is larger than the sum of its proper divisors (1).

199371487907 is an equidigital number, since it uses as much as digits as its factorization.

199371487907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 65.

The spelling of 199371487907 in words is "one hundred ninety-nine billion, three hundred seventy-one million, four hundred eighty-seven thousand, nine hundred seven".