191148953 has 8 divisors (see below), whose sum is σ = 197690880. Its totient is φ = 184710240.

The previous prime is 191148943. The next prime is 191148989. The reversal of 191148953 is 359841191.

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 191148953 - 2¹⁴ = 191132569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191148953.

It is not an unprimeable number, because it can be changed into a prime (191148943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22028 + ... + 29453.

It is an arithmetic number, because the mean of its divisors is an integer number (24711360).

Almost surely, 2^191148953 is an apocalyptic number.

It is an amenable number.

191148953 is a deficient number, since it is larger than the sum of its proper divisors (6541927).

191148953 is an equidigital number, since it uses as much as digits as its factorization.

191148953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51607.

The product of its digits is 38880, while the sum is 41.

The square root of 191148953 is about 13825.6628412529. The cubic root of 191148953 is about 576.0461891088.

The spelling of 191148953 in words is "one hundred ninety-one million, one hundred forty-eight thousand, nine hundred fifty-three".