191092001 has 2 divisors, whose sum is σ = 191092002. Its totient is φ = 191092000.

The previous prime is 191091997. The next prime is 191092007. The reversal of 191092001 is 100290191.

191092001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148254976 + 42837025 = 12176^2 + 6545^2 .

It is a cyclic number.

It is not a de Polignac number, because 191092001 - 2² = 191091997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (191092007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95546000 + 95546001.

It is an arithmetic number, because the mean of its divisors is an integer number (95546001).

Almost surely, 2^191092001 is an apocalyptic number.

It is an amenable number.

191092001 is a deficient number, since it is larger than the sum of its proper divisors (1).

191092001 is an equidigital number, since it uses as much as digits as its factorization.

191092001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 191092001 is about 13823.6030397288. The cubic root of 191092001 is about 575.9889732730.

The spelling of 191092001 in words is "one hundred ninety-one million, ninety-two thousand, one".