1854183621804 has 48 divisors (see below), whose sum is σ = 4588325078400. Its totient is φ = 580764877056.

The previous prime is 1854183621739. The next prime is 1854183621811. The reversal of 1854183621804 is 4081263814581.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 7215514 + ... + 7468065.

It is an arithmetic number, because the mean of its divisors is an integer number (95590105800).

Almost surely, 2^{1854183621804} is an apocalyptic number.

It is an amenable number.

1854183621804 is an abundant number, since it is smaller than the sum of its proper divisors (2734141456596).

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

1854183621804 is a wasteful number, since it uses less digits than its factorization.

1854183621804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14684222 (or 14684220 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 1854183621804 in words is "one trillion, eight hundred fifty-four billion, one hundred eighty-three million, six hundred twenty-one thousand, eight hundred four".