91848381 has 32 divisors (see below), whose sum is σ = 130486272. Its totient is φ = 57386880.

The previous prime is 91848377. The next prime is 91848389. The reversal of 91848381 is 18384819.

It is not a de Polignac number, because 91848381 - 2² = 91848377 is a prime.

It is a super-2 number, since 2×91848381² = 16872250184642322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91848389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563406 + ... + 563568.

It is an arithmetic number, because the mean of its divisors is an integer number (4077696).

Almost surely, 2^91848381 is an apocalyptic number.

It is an amenable number.

91848381 is a deficient number, since it is larger than the sum of its proper divisors (38637891).

91848381 is a wasteful number, since it uses less digits than its factorization.

91848381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 55296, while the sum is 42.

The square root of 91848381 is about 9583.7561008198. The cubic root of 91848381 is about 451.1876135800.

It can be divided in two parts, 91848 and 381, that added together give a palindrome (92229).

The spelling of 91848381 in words is "ninety-one million, eight hundred forty-eight thousand, three hundred eighty-one".