91409291682 has 8 divisors (see below), whose sum is σ = 182818583376. Its totient is φ = 30469763892.

The previous prime is 91409291681. The next prime is 91409291717. The reversal of 91409291682 is 28619290419.

It is a sphenic number, since it is the product of 3 distinct primes.

91409291682 is an admirable number.

It is a super-3 number, since 3×91409291682³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91409291681) 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, 7617440968 + ... + 7617440979.

It is an arithmetic number, because the mean of its divisors is an integer number (22852322922).

Almost surely, 2^91409291682 is an apocalyptic number.

91409291682 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91409291682 is a wasteful number, since it uses less digits than its factorization.

91409291682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15234881952.

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 91409291682 in words is "ninety-one billion, four hundred nine million, two hundred ninety-one thousand, six hundred eighty-two".