91643126 has 4 divisors (see below), whose sum is σ = 137464692. Its totient is φ = 45821562.

The previous prime is 91643119. The next prime is 91643143. The reversal of 91643126 is 62134619.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 91643092 and 91643101.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22910780 + ... + 22910783.

It is an arithmetic number, because the mean of its divisors is an integer number (34366173).

Almost surely, 2^91643126 is an apocalyptic number.

91643126 is a deficient number, since it is larger than the sum of its proper divisors (45821566).

91643126 is a wasteful number, since it uses less digits than its factorization.

91643126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45821565.

The product of its digits is 7776, while the sum is 32.

The square root of 91643126 is about 9573.0416274035. The cubic root of 91643126 is about 450.8512709286.

The spelling of 91643126 in words is "ninety-one million, six hundred forty-three thousand, one hundred twenty-six".