190955761 has 2 divisors, whose sum is σ = 190955762. Its totient is φ = 190955760.

The previous prime is 190955759. The next prime is 190955797. The reversal of 190955761 is 167559091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163456225 + 27499536 = 12785^2 + 5244^2 .

It is a cyclic number.

It is not a de Polignac number, because 190955761 - 2¹ = 190955759 is a prime.

Together with 190955759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (190955711) 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, 95477880 + 95477881.

It is an arithmetic number, because the mean of its divisors is an integer number (95477881).

Almost surely, 2^190955761 is an apocalyptic number.

It is an amenable number.

190955761 is a deficient number, since it is larger than the sum of its proper divisors (1).

190955761 is an equidigital number, since it uses as much as digits as its factorization.

190955761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 43.

The square root of 190955761 is about 13818.6743575496. The cubic root of 190955761 is about 575.8520559873.

The spelling of 190955761 in words is "one hundred ninety million, nine hundred fifty-five thousand, seven hundred sixty-one".