101800834 has 8 divisors (see below), whose sum is σ = 152748288. Its totient is φ = 50884740.

The previous prime is 101800819. The next prime is 101800837. The reversal of 101800834 is 438008101.

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

It is a junction number, because it is equal to n+sod(n) for n = 101800799 and 101800808.

It is not an unprimeable number, because it can be changed into a prime (101800837) 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 3 ways as a sum of consecutive naturals, for example, 3639 + ... + 14725.

It is an arithmetic number, because the mean of its divisors is an integer number (19093536).

Almost surely, 2^101800834 is an apocalyptic number.

101800834 is a deficient number, since it is larger than the sum of its proper divisors (50947454).

101800834 is a wasteful number, since it uses less digits than its factorization.

101800834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15680.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 101800834 is about 10089.6399341106. The cubic root of 101800834 is about 466.9285671623.

Adding to 101800834 its reverse (438008101), we get a palindrome (539808935).

The spelling of 101800834 in words is "one hundred one million, eight hundred thousand, eight hundred thirty-four".