861383358 has 24 divisors (see below), whose sum is σ = 2035997496. Its totient is φ = 261025200.

The previous prime is 861383351. The next prime is 861383371. The reversal of 861383358 is 853383168.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861383351) 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 11 ways as a sum of consecutive naturals, for example, 2175013 + ... + 2175408.

It is an arithmetic number, because the mean of its divisors is an integer number (84833229).

Almost surely, 2^861383358 is an apocalyptic number.

861383358 is an abundant number, since it is smaller than the sum of its proper divisors (1174614138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

861383358 is a wasteful number, since it uses less digits than its factorization.

861383358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350440 (or 4350437 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 861383358 is about 29349.3331781150. Note that the first 3 decimals coincide. The cubic root of 861383358 is about 951.4781634768.

The spelling of 861383358 in words is "eight hundred sixty-one million, three hundred eighty-three thousand, three hundred fifty-eight".