1900845568 has 20 divisors (see below), whose sum is σ = 3797979570. Its totient is φ = 950422528.

The previous prime is 1900845559. The next prime is 1900845619. The reversal of 1900845568 is 8655480091.

It can be written as a sum of positive squares in only one way, i.e., 1848312064 + 52533504 = 42992^2 + 7248^2 .

It is a super-2 number, since 2×1900845568² = 7226427746770485248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1855783 + ... + 1856806.

Almost surely, 2^1900845568 is an apocalyptic number.

It is an amenable number.

1900845568 is a deficient number, since it is larger than the sum of its proper divisors (1897134002).

1900845568 is an frugal number, since it uses more digits than its factorization.

1900845568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712607 (or 3712591 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 1900845568 is about 43598.6876866724. The cubic root of 1900845568 is about 1238.7460372354.

The spelling of 1900845568 in words is "one billion, nine hundred million, eight hundred forty-five thousand, five hundred sixty-eight".