91641130 has 32 divisors (see below), whose sum is σ = 190802304. Its totient is φ = 31039296.

The previous prime is 91641103. The next prime is 91641149. The reversal of 91641130 is 3114619.

91641130 = 70² + 71² + ... + 650².

It is a junction number, because it is equal to n+sod(n) for n = 91641095 and 91641104.

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, 2077 + ... + 13696.

It is an arithmetic number, because the mean of its divisors is an integer number (5962572).

Almost surely, 2^91641130 is an apocalyptic number.

91641130 is an abundant number, since it is smaller than the sum of its proper divisors (99161174).

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

91641130 is a wasteful number, since it uses less digits than its factorization.

91641130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 91641130 is about 9572.9373757484. The cubic root of 91641130 is about 450.8479977038.

Adding to 91641130 its reverse (3114619), we get a palindrome (94755749).

The spelling of 91641130 in words is "ninety-one million, six hundred forty-one thousand, one hundred thirty".