100861798 has 16 divisors (see below), whose sum is σ = 154624320. Its totient is φ = 49329000.

The previous prime is 100861793. The next prime is 100861801. The reversal of 100861798 is 897168001.

It is a self number, because there is not a number n which added to its sum of digits gives 100861798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100861793) 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, 22873 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (9664020).

Almost surely, 2^100861798 is an apocalyptic number.

100861798 is a deficient number, since it is larger than the sum of its proper divisors (53762522).

100861798 is a wasteful number, since it uses less digits than its factorization.

100861798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 100861798 is about 10042.9974609177. The cubic root of 100861798 is about 465.4884419326.

The spelling of 100861798 in words is "one hundred million, eight hundred sixty-one thousand, seven hundred ninety-eight".