91861134 has 16 divisors (see below), whose sum is σ = 185617488. Its totient is φ = 30304512.

The previous prime is 91861129. The next prime is 91861151. The reversal of 91861134 is 43116819.

It is a junction number, because it is equal to n+sod(n) for n = 91861095 and 91861104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78337 + ... + 79500.

It is an arithmetic number, because the mean of its divisors is an integer number (11601093).

Almost surely, 2^91861134 is an apocalyptic number.

91861134 is an abundant number, since it is smaller than the sum of its proper divisors (93756354).

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

91861134 is a wasteful number, since it uses less digits than its factorization.

91861134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157939.

The product of its digits is 5184, while the sum is 33.

The square root of 91861134 is about 9584.4214222873. The cubic root of 91861134 is about 451.2084948384.

The spelling of 91861134 in words is "ninety-one million, eight hundred sixty-one thousand, one hundred thirty-four".