861481468 has 24 divisors (see below), whose sum is σ = 1594702368. Its totient is φ = 406365696.

The previous prime is 861481459. The next prime is 861481469. The reversal of 861481468 is 864184168.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861481469) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 57421 + ... + 70852.

It is an arithmetic number, because the mean of its divisors is an integer number (66445932).

Almost surely, 2^861481468 is an apocalyptic number.

It is an amenable number.

861481468 is a deficient number, since it is larger than the sum of its proper divisors (733220900).

861481468 is a wasteful number, since it uses less digits than its factorization.

861481468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128373 (or 128371 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 861481468 is about 29351.0045483966. The cubic root of 861481468 is about 951.5142859837.

It can be divided in two parts, 86148 and 1468, that added together give a square (87616 = 296²).

The spelling of 861481468 in words is "eight hundred sixty-one million, four hundred eighty-one thousand, four hundred sixty-eight".