91030734369 has 27 divisors (see below), whose sum is σ = 132515240403. Its totient is φ = 60217087392.

The previous prime is 91030734337. The next prime is 91030734401. The reversal of 91030734369 is 96343703019.

It is a happy number.

The square root of 91030734369 is 301713.

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

It is an interprime number because it is at equal distance from previous prime (91030734337) and next prime (91030734401).

It can be written as a sum of positive squares in only one way, i.e., 2636309025 + 88394425344 = 51345^2 + 297312^2 .

It is not a de Polignac number, because 91030734369 - 2⁵ = 91030734337 is a prime.

It is a super-2 number, since 2×91030734369² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91030734469) 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 26 ways as a sum of consecutive naturals, for example, 147537349 + ... + 147537965.

Almost surely, 2^91030734369 is an apocalyptic number.

91030734369 is the 301713-rd square number.

91030734369 is the 150857-th centered octagonal number.

It is an amenable number.

91030734369 is a deficient number, since it is larger than the sum of its proper divisors (41484506034).

91030734369 is an frugal number, since it uses more digits than its factorization.

91030734369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 783 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The spelling of 91030734369 in words is "ninety-one billion, thirty million, seven hundred thirty-four thousand, three hundred sixty-nine".