91118546 has 8 divisors (see below), whose sum is σ = 136836300. Its totient is φ = 45506448.

The previous prime is 91118543. The next prime is 91118549. The reversal of 91118546 is 64581119.

It is an interprime number because it is at equal distance from previous prime (91118543) and next prime (91118549).

It can be written as a sum of positive squares in 2 ways, for example, as 90992521 + 126025 = 9539^2 + 355^2 .

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

It is not an unprimeable number, because it can be changed into a prime (91118543) 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, 24221 + ... + 27728.

Almost surely, 2^91118546 is an apocalyptic number.

91118546 is a deficient number, since it is larger than the sum of its proper divisors (45717754).

91118546 is a wasteful number, since it uses less digits than its factorization.

91118546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52828.

The product of its digits is 8640, while the sum is 35.

The square root of 91118546 is about 9545.6034906128. The cubic root of 91118546 is about 449.9893758809.

The spelling of 91118546 in words is "ninety-one million, one hundred eighteen thousand, five hundred forty-six".