191468545 has 8 divisors (see below), whose sum is σ = 230953896. Its totient is φ = 152380416.

The previous prime is 191468531. The next prime is 191468549. The reversal of 191468545 is 545864191.

It can be written as a sum of positive squares in 4 ways, for example, as 2241009 + 189227536 = 1497^2 + 13756^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 191468545 - 2²¹ = 189371393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191468549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98242 + ... + 100171.

It is an arithmetic number, because the mean of its divisors is an integer number (28869237).

Almost surely, 2^191468545 is an apocalyptic number.

It is an amenable number.

191468545 is a deficient number, since it is larger than the sum of its proper divisors (39485351).

191468545 is a wasteful number, since it uses less digits than its factorization.

191468545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198611.

The product of its digits is 172800, while the sum is 43.

The square root of 191468545 is about 13837.2159410772. The cubic root of 191468545 is about 576.3670510056.

The spelling of 191468545 in words is "one hundred ninety-one million, four hundred sixty-eight thousand, five hundred forty-five".