861536038 has 32 divisors (see below), whose sum is σ = 1515594240. Its totient is φ = 363094560.

The previous prime is 861536023. The next prime is 861536177. The reversal of 861536038 is 830635168.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2281 + ... + 41572.

It is an arithmetic number, because the mean of its divisors is an integer number (47362320).

Almost surely, 2^861536038 is an apocalyptic number.

861536038 is a deficient number, since it is larger than the sum of its proper divisors (654058202).

861536038 is a wasteful number, since it uses less digits than its factorization.

861536038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43932.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 861536038 is about 29351.9341441071. The cubic root of 861536038 is about 951.5343765835.

The spelling of 861536038 in words is "eight hundred sixty-one million, five hundred thirty-six thousand, thirty-eight".