190200602909 has 2 divisors, whose sum is σ = 190200602910. Its totient is φ = 190200602908.

The previous prime is 190200602899. The next prime is 190200602927. The reversal of 190200602909 is 909206002091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188944963684 + 1255639225 = 434678^2 + 35435^2 .

It is a cyclic number.

It is not a de Polignac number, because 190200602909 - 2⁸ = 190200602653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190200602309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95100301454 + 95100301455.

It is an arithmetic number, because the mean of its divisors is an integer number (95100301455).

Almost surely, 2^190200602909 is an apocalyptic number.

It is an amenable number.

190200602909 is a deficient number, since it is larger than the sum of its proper divisors (1).

190200602909 is an equidigital number, since it uses as much as digits as its factorization.

190200602909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The spelling of 190200602909 in words is "one hundred ninety billion, two hundred million, six hundred two thousand, nine hundred nine".