101812538 has 16 divisors (see below), whose sum is σ = 155641824. Its totient is φ = 49936560.

The previous prime is 101812537. The next prime is 101812561. The reversal of 101812538 is 835218101.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101812538.

It is not an unprimeable number, because it can be changed into a prime (101812537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56081 + ... + 57867.

It is an arithmetic number, because the mean of its divisors is an integer number (9727614).

Almost surely, 2^101812538 is an apocalyptic number.

101812538 is a deficient number, since it is larger than the sum of its proper divisors (53829286).

101812538 is a wasteful number, since it uses less digits than its factorization.

101812538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 101812538 is about 10090.2199183169. The cubic root of 101812538 is about 466.9464606716.

The spelling of 101812538 in words is "one hundred one million, eight hundred twelve thousand, five hundred thirty-eight".