91018245 has 16 divisors (see below), whose sum is σ = 151961472. Its totient is φ = 46432320.

The previous prime is 91018231. The next prime is 91018259. The reversal of 91018245 is 54281019.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91018231) and next prime (91018259).

It is not a de Polignac number, because 91018245 - 2⁶ = 91018181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131566 + ... + 132255.

It is an arithmetic number, because the mean of its divisors is an integer number (9497592).

Almost surely, 2^91018245 is an apocalyptic number.

It is an amenable number.

91018245 is a deficient number, since it is larger than the sum of its proper divisors (60943227).

91018245 is a wasteful number, since it uses less digits than its factorization.

91018245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263852.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 91018245 is about 9540.3482640834. The cubic root of 91018245 is about 449.8242029370.

The spelling of 91018245 in words is "ninety-one million, eighteen thousand, two hundred forty-five".