454148641949 has 4 divisors (see below), whose sum is σ = 480863267964. Its totient is φ = 427434015936.

The previous prime is 454148641873. The next prime is 454148641951. The reversal of 454148641949 is 949146841454.

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

It can be written as a sum of positive squares in 2 ways, for example, as 127013832100 + 327134809849 = 356390^2 + 571957^2 .

It is not a de Polignac number, because 454148641949 - 2²⁰ = 454147593373 is a prime.

It is a super-3 number, since 3×454148641949³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454148641979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13357312982 + ... + 13357313015.

It is an arithmetic number, because the mean of its divisors is an integer number (120215816991).

Almost surely, 2^454148641949 is an apocalyptic number.

It is an amenable number.

454148641949 is a deficient number, since it is larger than the sum of its proper divisors (26714626015).

454148641949 is a wasteful number, since it uses less digits than its factorization.

454148641949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26714626014.

The product of its digits is 19906560, while the sum is 59.

The spelling of 454148641949 in words is "four hundred fifty-four billion, one hundred forty-eight million, six hundred forty-one thousand, nine hundred forty-nine".