861477118 has 4 divisors (see below), whose sum is σ = 1292215680. Its totient is φ = 430738558.

The previous prime is 861477101. The next prime is 861477139. The reversal of 861477118 is 811774168.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215369278 + ... + 215369281.

It is an arithmetic number, because the mean of its divisors is an integer number (323053920).

Almost surely, 2^861477118 is an apocalyptic number.

861477118 is a deficient number, since it is larger than the sum of its proper divisors (430738562).

861477118 is a wasteful number, since it uses less digits than its factorization.

861477118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430738561.

The product of its digits is 75264, while the sum is 43.

The square root of 861477118 is about 29350.9304452176. The cubic root of 861477118 is about 951.5126844425.

The spelling of 861477118 in words is "eight hundred sixty-one million, four hundred seventy-seven thousand, one hundred eighteen".