1865838831152 has 20 divisors (see below), whose sum is σ = 3731677663296. Its totient is φ = 902825240640.

The previous prime is 1865838831019. The next prime is 1865838831169. The reversal of 1865838831152 is 2511388385681.

It is a happy number.

1865838831152 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1865838831091 and 1865838831100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1880885423 + ... + 1880886414.

Almost surely, 2^{1865838831152} is an apocalyptic number.

It is an amenable number.

1865838831152 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1865838831152 is a wasteful number, since it uses less digits than its factorization.

1865838831152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761771876 (or 3761771870 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 59.

The spelling of 1865838831152 in words is "one trillion, eight hundred sixty-five billion, eight hundred thirty-eight million, eight hundred thirty-one thousand, one hundred fifty-two".