91890141445 has 8 divisors (see below), whose sum is σ = 110270216736. Its totient is φ = 73510748496.

The previous prime is 91890141439. The next prime is 91890141449. The reversal of 91890141445 is 54414109819.

It is a happy number.

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 91890141445 - 2¹³ = 91890133253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91890141395 and 91890141404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91890141449) 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, 198154 + ... + 472276.

It is an arithmetic number, because the mean of its divisors is an integer number (13783777092).

Almost surely, 2^91890141445 is an apocalyptic number.

It is an amenable number.

91890141445 is a deficient number, since it is larger than the sum of its proper divisors (18380075291).

91890141445 is a wasteful number, since it uses less digits than its factorization.

91890141445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341171.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 91890141445 in words is "ninety-one billion, eight hundred ninety million, one hundred forty-one thousand, four hundred forty-five".