861810348 has 24 divisors (see below), whose sum is σ = 2298161152. Its totient is φ = 246231504.

The previous prime is 861810337. The next prime is 861810349. The reversal of 861810348 is 843018168.

It is a super-2 number, since 2×861810348² = 1485434151839762208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (861810349) 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, 5129740 + ... + 5129907.

Almost surely, 2^861810348 is an apocalyptic number.

It is an amenable number.

861810348 is an abundant number, since it is smaller than the sum of its proper divisors (1436350804).

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

861810348 is a wasteful number, since it uses less digits than its factorization.

861810348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259661 (or 10259659 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 861810348 is about 29356.6065477603. The cubic root of 861810348 is about 951.6353542506.

The spelling of 861810348 in words is "eight hundred sixty-one million, eight hundred ten thousand, three hundred forty-eight".