4491131554441 has 9 divisors (see below), whose sum is σ = 5224394779149. Its totient is φ = 3849528617004.

The previous prime is 4491131554387. The next prime is 4491131554447. The reversal of 4491131554441 is 1444551311944.

The square root of 4491131554441 is 2119229.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4491131554441 - 2⁷ = 4491131554313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4491131554391 and 4491131554400.

It is not an unprimeable number, because it can be changed into a prime (4491131554447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14683230 + ... + 14985976.

Almost surely, 2^{4491131554441} is an apocalyptic number.

4491131554441 is the 2119229-th square number.

4491131554441 is the 1059615-th centered octagonal number.

It is an amenable number.

4491131554441 is a deficient number, since it is larger than the sum of its proper divisors (733263224708).

4491131554441 is an frugal number, since it uses more digits than its factorization.

4491131554441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605508 (or 302754 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The spelling of 4491131554441 in words is "four trillion, four hundred ninety-one billion, one hundred thirty-one million, five hundred fifty-four thousand, four hundred forty-one".