545005188 has 72 divisors (see below), whose sum is σ = 1695581888. Its totient is φ = 143736768.

The previous prime is 545005163. The next prime is 545005189. The reversal of 545005188 is 881500545.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (545005189) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79906 + ... + 86457.

Almost surely, 2^545005188 is an apocalyptic number.

It is an amenable number.

545005188 is an abundant number, since it is smaller than the sum of its proper divisors (1150576700).

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

545005188 is a wasteful number, since it uses less digits than its factorization.

545005188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166393 (or 166388 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

The square root of 545005188 is about 23345.3461743449. The cubic root of 545005188 is about 816.8335088991.

The spelling of 545005188 in words is "five hundred forty-five million, five thousand, one hundred eighty-eight".