454628191 has 4 divisors (see below), whose sum is σ = 454781800. Its totient is φ = 454474584.

The previous prime is 454628183. The next prime is 454628203. The reversal of 454628191 is 191826454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 454628191 - 2³ = 454628183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454628171) 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, 72276 + ... + 78313.

It is an arithmetic number, because the mean of its divisors is an integer number (113695450).

Almost surely, 2^454628191 is an apocalyptic number.

454628191 is a deficient number, since it is larger than the sum of its proper divisors (153609).

454628191 is a wasteful number, since it uses less digits than its factorization.

454628191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153608.

The product of its digits is 69120, while the sum is 40.

The square root of 454628191 is about 21322.0118891253. The cubic root of 454628191 is about 768.9276076205.

The spelling of 454628191 in words is "four hundred fifty-four million, six hundred twenty-eight thousand, one hundred ninety-one".