191485453 has 2 divisors, whose sum is σ = 191485454. Its totient is φ = 191485452.

The previous prime is 191485361. The next prime is 191485507. The reversal of 191485453 is 354584191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133679844 + 57805609 = 11562^2 + 7603^2 .

It is a cyclic number.

It is not a de Polignac number, because 191485453 - 2¹⁷ = 191354381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191485253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95742726 + 95742727.

It is an arithmetic number, because the mean of its divisors is an integer number (95742727).

Almost surely, 2^191485453 is an apocalyptic number.

It is an amenable number.

191485453 is a deficient number, since it is larger than the sum of its proper divisors (1).

191485453 is an equidigital number, since it uses as much as digits as its factorization.

191485453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 191485453 is about 13837.8268886411. The cubic root of 191485453 is about 576.3840162417.

The spelling of 191485453 in words is "one hundred ninety-one million, four hundred eighty-five thousand, four hundred fifty-three".