91383630 has 32 divisors (see below), whose sum is σ = 236192544. Its totient is φ = 22494336.

The previous prime is 91383613. The next prime is 91383631. The reversal of 91383630 is 3638319.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91383591 and 91383600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91383631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116769 + ... + 117548.

It is an arithmetic number, because the mean of its divisors is an integer number (7381017).

Almost surely, 2^91383630 is an apocalyptic number.

91383630 is an abundant number, since it is smaller than the sum of its proper divisors (144808914).

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

91383630 is a wasteful number, since it uses less digits than its factorization.

91383630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234340.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 91383630 is about 9559.4785422637. The cubic root of 91383630 is about 450.4253262630.

The spelling of 91383630 in words is "ninety-one million, three hundred eighty-three thousand, six hundred thirty".