1894338568 has 8 divisors (see below), whose sum is σ = 3551884830. Its totient is φ = 947169280.

The previous prime is 1894338533. The next prime is 1894338569. The reversal of 1894338568 is 8658334981.

It can be written as a sum of positive squares in only one way, i.e., 1885470084 + 8868484 = 43422^2 + 2978^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1894338568² = 7177037220424581248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1894338569) by changing a digit.

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, 118396153 + ... + 118396168.

Almost surely, 2^1894338568 is an apocalyptic number.

It is an amenable number.

1894338568 is a deficient number, since it is larger than the sum of its proper divisors (1657546262).

1894338568 is a wasteful number, since it uses less digits than its factorization.

1894338568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236792327 (or 236792323 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 1894338568 is about 43523.9999080967. Note that the first 4 decimals coincide. The cubic root of 1894338568 is about 1237.3309239197.

The spelling of 1894338568 in words is "one billion, eight hundred ninety-four million, three hundred thirty-eight thousand, five hundred sixty-eight".