100018045 has 4 divisors (see below), whose sum is σ = 120021660. Its totient is φ = 80014432.

The previous prime is 100018031. The next prime is 100018057. The reversal of 100018045 is 540810001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59644729 + 40373316 = 7723^2 + 6354^2 .

It is a cyclic number.

It is not a de Polignac number, because 100018045 - 2¹⁷ = 99886973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10001800 + ... + 10001809.

It is an arithmetic number, because the mean of its divisors is an integer number (30005415).

Almost surely, 2^100018045 is an apocalyptic number.

It is an amenable number.

100018045 is a deficient number, since it is larger than the sum of its proper divisors (20003615).

100018045 is an equidigital number, since it uses as much as digits as its factorization.

100018045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20003614.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 100018045 is about 10000.9022093009. The cubic root of 100018045 is about 464.1868008389.

Adding to 100018045 its reverse (540810001), we get a palindrome (640828046).

The spelling of 100018045 in words is "one hundred million, eighteen thousand, forty-five".