91018896 has 20 divisors (see below), whose sum is σ = 235132272. Its totient is φ = 30339616.

The previous prime is 91018891. The next prime is 91018903. The reversal of 91018896 is 69881019.

It is not an unprimeable number, because it can be changed into a prime (91018891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948066 + ... + 948161.

Almost surely, 2^91018896 is an apocalyptic number.

It is an amenable number.

91018896 is an abundant number, since it is smaller than the sum of its proper divisors (144113376).

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

91018896 is a wasteful number, since it uses less digits than its factorization.

91018896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896238 (or 1896232 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 91018896 is about 9540.3823822738. The cubic root of 91018896 is about 449.8252753771.

The spelling of 91018896 in words is "ninety-one million, eighteen thousand, eight hundred ninety-six".