861101038 has 16 divisors (see below), whose sum is σ = 1479592800. Its totient is φ = 368188416.

The previous prime is 861101029. The next prime is 861101039. The reversal of 861101038 is 830101168.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 861100997 and 861101015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861101039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64963 + ... + 77086.

It is an arithmetic number, because the mean of its divisors is an integer number (92474550).

Almost surely, 2^861101038 is an apocalyptic number.

861101038 is a deficient number, since it is larger than the sum of its proper divisors (618491762).

861101038 is a wasteful number, since it uses less digits than its factorization.

861101038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142491.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 861101038 is about 29344.5231346498. The cubic root of 861101038 is about 951.3742025381.

The spelling of 861101038 in words is "eight hundred sixty-one million, one hundred one thousand, thirty-eight".