1918345032856 has 64 divisors (see below), whose sum is σ = 4147737295680. Its totient is φ = 814768558080.

The previous prime is 1918345032811. The next prime is 1918345032883. The reversal of 1918345032856 is 6582305438191.

It is a junction number, because it is equal to n+sod(n) for n = 1918345032797 and 1918345032806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4338666 + ... + 4760326.

It is an arithmetic number, because the mean of its divisors is an integer number (64808395245).

Almost surely, 2^{1918345032856} is an apocalyptic number.

It is an amenable number.

1918345032856 is an abundant number, since it is smaller than the sum of its proper divisors (2229392262824).

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

1918345032856 is a wasteful number, since it uses less digits than its factorization.

1918345032856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422404 (or 422400 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 1918345032856 in words is "one trillion, nine hundred eighteen billion, three hundred forty-five million, thirty-two thousand, eight hundred fifty-six".