861911496 has 32 divisors (see below), whose sum is σ = 2394199200. Its totient is φ = 287303760.

The previous prime is 861911483. The next prime is 861911551. The reversal of 861911496 is 694119168.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1994950 + ... + 1995381.

It is an arithmetic number, because the mean of its divisors is an integer number (74818725).

Almost surely, 2^861911496 is an apocalyptic number.

It is an amenable number.

861911496 is an abundant number, since it is smaller than the sum of its proper divisors (1532287704).

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

861911496 is a wasteful number, since it uses less digits than its factorization.

861911496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990346 (or 3990336 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 861911496 is about 29358.3292440152. The cubic root of 861911496 is about 951.6725829547.

The spelling of 861911496 in words is "eight hundred sixty-one million, nine hundred eleven thousand, four hundred ninety-six".