191053963 has 2 divisors, whose sum is σ = 191053964. Its totient is φ = 191053962.

The previous prime is 191053927. The next prime is 191053969. The reversal of 191053963 is 369350191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191053963 - 2¹⁷ = 190922891 is a prime.

It is not a weakly prime, because it can be changed into another prime (191053969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95526981 + 95526982.

It is an arithmetic number, because the mean of its divisors is an integer number (95526982).

Almost surely, 2^191053963 is an apocalyptic number.

191053963 is a deficient number, since it is larger than the sum of its proper divisors (1).

191053963 is an equidigital number, since it uses as much as digits as its factorization.

191053963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 191053963 is about 13822.2271360299. The cubic root of 191053963 is about 575.9507527259.

The spelling of 191053963 in words is "one hundred ninety-one million, fifty-three thousand, nine hundred sixty-three".