100919838 has 16 divisors (see below), whose sum is σ = 203293440. Its totient is φ = 33397656.

The previous prime is 100919827. The next prime is 100919843. The reversal of 100919838 is 838919001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100919796 and 100919805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59670 + ... + 61337.

It is an arithmetic number, because the mean of its divisors is an integer number (12705840).

Almost surely, 2^100919838 is an apocalyptic number.

100919838 is an abundant number, since it is smaller than the sum of its proper divisors (102373602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100919838 is a wasteful number, since it uses less digits than its factorization.

100919838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121151.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 100919838 is about 10045.8866209011. The cubic root of 100919838 is about 465.5777118350.

The spelling of 100919838 in words is "one hundred million, nine hundred nineteen thousand, eight hundred thirty-eight".