190207811 has 2 divisors, whose sum is σ = 190207812. Its totient is φ = 190207810.

The previous prime is 190207783. The next prime is 190207813. The reversal of 190207811 is 118702091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190207811 - 2¹⁸ = 189945667 is a prime.

It is a super-2 number, since 2×190207811² = 72358022730823442, which contains 22 as substring.

Together with 190207813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190207813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95103905 + 95103906.

It is an arithmetic number, because the mean of its divisors is an integer number (95103906).

Almost surely, 2^190207811 is an apocalyptic number.

190207811 is a deficient number, since it is larger than the sum of its proper divisors (1).

190207811 is an equidigital number, since it uses as much as digits as its factorization.

190207811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 190207811 is about 13791.5847892836. The cubic root of 190207811 is about 575.0992252202.

The spelling of 190207811 in words is "one hundred ninety million, two hundred seven thousand, eight hundred eleven".