91893859601 has 8 divisors (see below), whose sum is σ = 97365105864. Its totient is φ = 86429916160.

The previous prime is 91893859597. The next prime is 91893859619. The reversal of 91893859601 is 10695839819.

It is a Cunningham number, because it is equal to 303140²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4505631376 + 87388228225 = 67124^2 + 295615^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 91893859601 - 2² = 91893859597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91893856601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1799780 + ... + 1850133.

It is an arithmetic number, because the mean of its divisors is an integer number (12170638233).

Almost surely, 2^91893859601 is an apocalyptic number.

It is an amenable number.

91893859601 is a deficient number, since it is larger than the sum of its proper divisors (5471246263).

91893859601 is a wasteful number, since it uses less digits than its factorization.

91893859601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651411.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 91893859601 in words is "ninety-one billion, eight hundred ninety-three million, eight hundred fifty-nine thousand, six hundred one".