100018361 has 8 divisors (see below), whose sum is σ = 109554120. Its totient is φ = 90888448.

The previous prime is 100018351. The next prime is 100018379. The reversal of 100018361 is 163810001.

It can be written as a sum of positive squares in 4 ways, for example, as 12033961 + 87984400 = 3469^2 + 9380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100018361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100018351) 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, 100946 + ... + 101931.

It is an arithmetic number, because the mean of its divisors is an integer number (13694265).

Almost surely, 2^100018361 is an apocalyptic number.

It is an amenable number.

100018361 is a deficient number, since it is larger than the sum of its proper divisors (9535759).

100018361 is a wasteful number, since it uses less digits than its factorization.

100018361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202923.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 100018361 is about 10000.9180078631. The cubic root of 100018361 is about 464.1872896936.

Adding to 100018361 its reverse (163810001), we get a palindrome (263828362).

The spelling of 100018361 in words is "one hundred million, eighteen thousand, three hundred sixty-one".