1854221586900 has 72 divisors (see below), whose sum is σ = 5373633502944. Its totient is φ = 493652419200.

The previous prime is 1854221586881. The next prime is 1854221586913. The reversal of 1854221586900 is 96851224581.

It is a super-2 number, since 2×1854221586900² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 4857486 + ... + 5225285.

It is an arithmetic number, because the mean of its divisors is an integer number (74633798652).

Almost surely, 2^{1854221586900} is an apocalyptic number.

1854221586900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1854221586900 is an abundant number, since it is smaller than the sum of its proper divisors (3519411916044).

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

1854221586900 is a wasteful number, since it uses less digits than its factorization.

1854221586900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10083401 (or 10083394 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 1854221586900 in words is "one trillion, eight hundred fifty-four billion, two hundred twenty-one million, five hundred eighty-six thousand, nine hundred".