191021483 has 2 divisors, whose sum is σ = 191021484. Its totient is φ = 191021482.

The previous prime is 191021477. The next prime is 191021513. The reversal of 191021483 is 384120191.

191021483 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 is a cyclic number.

It is not a de Polignac number, because 191021483 - 2¹⁴ = 191005099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (191021423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95510741 + 95510742.

It is an arithmetic number, because the mean of its divisors is an integer number (95510742).

Almost surely, 2^191021483 is an apocalyptic number.

191021483 is a deficient number, since it is larger than the sum of its proper divisors (1).

191021483 is an equidigital number, since it uses as much as digits as its factorization.

191021483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 191021483 is about 13821.0521668938. The cubic root of 191021483 is about 575.9181128366.

The spelling of 191021483 in words is "one hundred ninety-one million, twenty-one thousand, four hundred eighty-three".