845989164 has 96 divisors (see below), whose sum is σ = 2271682560. Its totient is φ = 272051136.

The previous prime is 845989159. The next prime is 845989169. The reversal of 845989164 is 461989548.

It is an interprime number because it is at equal distance from previous prime (845989159) and next prime (845989169).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 845989164.

It is not an unprimeable number, because it can be changed into a prime (845989169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506659 + ... + 508325.

It is an arithmetic number, because the mean of its divisors is an integer number (23663360).

Almost surely, 2^845989164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845989164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1135841280).

845989164 is an abundant number, since it is smaller than the sum of its proper divisors (1425693396).

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

845989164 is a wasteful number, since it uses less digits than its factorization.

845989164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844 (or 1836 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 845989164 is about 29085.8928692244. The cubic root of 845989164 is about 945.7759512438.

The spelling of 845989164 in words is "eight hundred forty-five million, nine hundred eighty-nine thousand, one hundred sixty-four".