100505018 has 16 divisors (see below), whose sum is σ = 154857120. Its totient is φ = 48895056.

The previous prime is 100505017. The next prime is 100505021. The reversal of 100505018 is 810505001.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100505011) 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, 21713 + ... + 25931.

It is an arithmetic number, because the mean of its divisors is an integer number (9678570).

Almost surely, 2^100505018 is an apocalyptic number.

100505018 is a deficient number, since it is larger than the sum of its proper divisors (54352102).

100505018 is a wasteful number, since it uses less digits than its factorization.

100505018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 100505018 is about 10025.2190998501. The cubic root of 100505018 is about 464.9389336696.

The spelling of 100505018 in words is "one hundred million, five hundred five thousand, eighteen".