100645838 has 8 divisors (see below), whose sum is σ = 157532688. Its totient is φ = 48134944.

The previous prime is 100645829. The next prime is 100645901. The reversal of 100645838 is 838546001.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100645798 and 100645807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093931 + ... + 1094022.

It is an arithmetic number, because the mean of its divisors is an integer number (19691586).

Almost surely, 2^100645838 is an apocalyptic number.

100645838 is a deficient number, since it is larger than the sum of its proper divisors (56886850).

100645838 is a wasteful number, since it uses less digits than its factorization.

100645838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187978.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 100645838 is about 10032.2399293478. The cubic root of 100645838 is about 465.1559780430.

The spelling of 100645838 in words is "one hundred million, six hundred forty-five thousand, eight hundred thirty-eight".