190660901 has 2 divisors, whose sum is σ = 190660902. Its totient is φ = 190660900.

The previous prime is 190660861. The next prime is 190660903. The reversal of 190660901 is 109066091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144624676 + 46036225 = 12026^2 + 6785^2 .

It is a cyclic number.

It is not a de Polignac number, because 190660901 - 2¹⁰ = 190659877 is a prime.

Together with 190660903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190660903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95330450 + 95330451.

It is an arithmetic number, because the mean of its divisors is an integer number (95330451).

Almost surely, 2^190660901 is an apocalyptic number.

It is an amenable number.

190660901 is a deficient number, since it is larger than the sum of its proper divisors (1).

190660901 is an equidigital number, since it uses as much as digits as its factorization.

190660901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 190660901 is about 13808.0013398029. The cubic root of 190660901 is about 575.5555070087. Note that the first 4 decimals are identical.

It can be divided in two parts, 19066090 and 1, that added together give a palindrome (19066091).

The spelling of 190660901 in words is "one hundred ninety million, six hundred sixty thousand, nine hundred one".