91847161 has 8 divisors (see below), whose sum is σ = 105598080. Its totient is φ = 78253728.

The previous prime is 91847153. The next prime is 91847201. The reversal of 91847161 is 16174819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91847161 - 2³ = 91847153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91847161.

It is not an unprimeable number, because it can be changed into a prime (91847101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38116 + ... + 40453.

It is an arithmetic number, because the mean of its divisors is an integer number (13199760).

Almost surely, 2^91847161 is an apocalyptic number.

It is an amenable number.

91847161 is a deficient number, since it is larger than the sum of its proper divisors (13750919).

91847161 is a wasteful number, since it uses less digits than its factorization.

91847161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78743.

The product of its digits is 12096, while the sum is 37.

The square root of 91847161 is about 9583.6924512424. The cubic root of 91847161 is about 451.1856158989.

The spelling of 91847161 in words is "ninety-one million, eight hundred forty-seven thousand, one hundred sixty-one".