191226953 has 4 divisors (see below), whose sum is σ = 192295440. Its totient is φ = 190158468.

The previous prime is 191226901. The next prime is 191226961. The reversal of 191226953 is 359622191.

191226953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 191226953 - 2¹⁰ = 191225929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191226983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533975 + ... + 534332.

It is an arithmetic number, because the mean of its divisors is an integer number (48073860).

Almost surely, 2^191226953 is an apocalyptic number.

It is an amenable number.

191226953 is a deficient number, since it is larger than the sum of its proper divisors (1068487).

191226953 is a wasteful number, since it uses less digits than its factorization.

191226953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068486.

The product of its digits is 29160, while the sum is 38.

The square root of 191226953 is about 13828.4833947906. The cubic root of 191226953 is about 576.1245320134.

The spelling of 191226953 in words is "one hundred ninety-one million, two hundred twenty-six thousand, nine hundred fifty-three".