1863623640676 has 72 divisors (see below), whose sum is σ = 3979481619456. Its totient is φ = 759969745920.

The previous prime is 1863623640551. The next prime is 1863623640691. The reversal of 1863623640676 is 6760463263681.

It is a self number, because there is not a number n which added to its sum of digits gives 1863623640676.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 221181 + ... + 1943236.

It is an arithmetic number, because the mean of its divisors is an integer number (55270578048).

Almost surely, 2^{1863623640676} is an apocalyptic number.

It is an amenable number.

1863623640676 is an abundant number, since it is smaller than the sum of its proper divisors (2115857978780).

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

1863623640676 is a wasteful number, since it uses less digits than its factorization.

1863623640676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164649 (or 2164640 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 58.

The spelling of 1863623640676 in words is "one trillion, eight hundred sixty-three billion, six hundred twenty-three million, six hundred forty thousand, six hundred seventy-six".