191900053 has 2 divisors, whose sum is σ = 191900054. Its totient is φ = 191900052.

The previous prime is 191900003. The next prime is 191900117. The reversal of 191900053 is 350009191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185150449 + 6749604 = 13607^2 + 2598^2 .

It is a cyclic number.

It is not a de Polignac number, because 191900053 - 2⁹ = 191899541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191899994 and 191900030.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191900003) 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, 95950026 + 95950027.

It is an arithmetic number, because the mean of its divisors is an integer number (95950027).

Almost surely, 2^191900053 is an apocalyptic number.

It is an amenable number.

191900053 is a deficient number, since it is larger than the sum of its proper divisors (1).

191900053 is an equidigital number, since it uses as much as digits as its factorization.

191900053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 191900053 is about 13852.7994643682. The cubic root of 191900053 is about 576.7997076108.

The spelling of 191900053 in words is "one hundred ninety-one million, nine hundred thousand, fifty-three".