1855218872202 has 16 divisors (see below), whose sum is σ = 3710468325600. Its totient is φ = 618401193872.

The previous prime is 1855218872197. The next prime is 1855218872257. The reversal of 1855218872202 is 2022788125581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443952 + ... + 1976747.

It is an arithmetic number, because the mean of its divisors is an integer number (231904270350).

Almost surely, 2^{1855218872202} is an apocalyptic number.

1855218872202 is an abundant number, since it is smaller than the sum of its proper divisors (1855249453398).

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

1855218872202 is a wasteful number, since it uses less digits than its factorization.

1855218872202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548437.

The product of its (nonzero) digits is 1433600, while the sum is 51.

The spelling of 1855218872202 in words is "one trillion, eight hundred fifty-five billion, two hundred eighteen million, eight hundred seventy-two thousand, two hundred two".