91828757469 has 4 divisors (see below), whose sum is σ = 122438343296. Its totient is φ = 61219171644.

The previous prime is 91828757467. The next prime is 91828757533. The reversal of 91828757469 is 96475782819.

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 not a de Polignac number, because 91828757469 - 2¹ = 91828757467 is a prime.

It is a super-2 number, since 2×91828757469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91828757467) 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, 15304792909 + ... + 15304792914.

It is an arithmetic number, because the mean of its divisors is an integer number (30609585824).

Almost surely, 2^91828757469 is an apocalyptic number.

It is an amenable number.

91828757469 is a deficient number, since it is larger than the sum of its proper divisors (30609585827).

91828757469 is a wasteful number, since it uses less digits than its factorization.

91828757469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30609585826.

The product of its digits is 60963840, while the sum is 66.

The spelling of 91828757469 in words is "ninety-one billion, eight hundred twenty-eight million, seven hundred fifty-seven thousand, four hundred sixty-nine".