91546789489 has 3 divisors (see below), whose sum is σ = 91547092057. Its totient is φ = 91546486922.

The previous prime is 91546789483. The next prime is 91546789507. The reversal of 91546789489 is 98498764519.

The square root of 91546789489 is 302567.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 91546789489 - 2¹¹ = 91546787441 is a prime.

It is a super-2 number, since 2×91546789489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91546789483) 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 2 ways as a sum of consecutive naturals, for example, 151284 + ... + 453850.

Almost surely, 2^91546789489 is an apocalyptic number.

91546789489 is the 302567-th square number.

91546789489 is the 151284-th centered octagonal number.

It is an amenable number.

91546789489 is a deficient number, since it is larger than the sum of its proper divisors (302568).

91546789489 is an frugal number, since it uses more digits than its factorization.

91546789489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605134 (or 302567 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 70.

The spelling of 91546789489 in words is "ninety-one billion, five hundred forty-six million, seven hundred eighty-nine thousand, four hundred eighty-nine".