1868204544 has 160 divisors (see below), whose sum is σ = 5130909696. Its totient is φ = 603832320.

The previous prime is 1868204543. The next prime is 1868204567. The reversal of 1868204544 is 4454028681.

It is a junction number, because it is equal to n+sod(n) for n = 1868204496 and 1868204505.

It is not an unprimeable number, because it can be changed into a prime (1868204543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11899314 + ... + 11899470.

Almost surely, 2^1868204544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868204544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2565454848).

1868204544 is an abundant number, since it is smaller than the sum of its proper divisors (3262705152).

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

1868204544 is a wasteful number, since it uses less digits than its factorization.

1868204544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The square root of 1868204544 is about 43222.7317970533. The cubic root of 1868204544 is about 1231.6145418074.

The spelling of 1868204544 in words is "one billion, eight hundred sixty-eight million, two hundred four thousand, five hundred forty-four".