545188698 has 48 divisors (see below), whose sum is σ = 1278696960. Its totient is φ = 172158696.

The previous prime is 545188697. The next prime is 545188753. The reversal of 545188698 is 896881545.

It is a happy number.

545188698 is a `hidden beast` number, since 545 + 1 + 8 + 8 + 6 + 98 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (545188697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5511 + ... + 33477.

It is an arithmetic number, because the mean of its divisors is an integer number (26639520).

Almost surely, 2^545188698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545188698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639348480).

545188698 is an abundant number, since it is smaller than the sum of its proper divisors (733508262).

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

545188698 is a wasteful number, since it uses less digits than its factorization.

545188698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28016 (or 27991 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 545188698 is about 23349.2761772180. The cubic root of 545188698 is about 816.9251779325.

It can be divided in two parts, 5451 and 88698, that added together give a palindrome (94149).

The spelling of 545188698 in words is "five hundred forty-five million, one hundred eighty-eight thousand, six hundred ninety-eight".