1868840552 has 8 divisors (see below), whose sum is σ = 3504076050. Its totient is φ = 934420272.

The previous prime is 1868840543. The next prime is 1868840563. The reversal of 1868840552 is 2550488681.

It can be written as a sum of positive squares in only one way, i.e., 1858816996 + 10023556 = 43114^2 + 3166^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1868840497 and 1868840506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116802527 + ... + 116802542.

Almost surely, 2^1868840552 is an apocalyptic number.

It is an amenable number.

1868840552 is a deficient number, since it is larger than the sum of its proper divisors (1635235498).

1868840552 is a wasteful number, since it uses less digits than its factorization.

1868840552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233605075 (or 233605071 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The square root of 1868840552 is about 43230.0885032636. The cubic root of 1868840552 is about 1231.7542887872.

The spelling of 1868840552 in words is "one billion, eight hundred sixty-eight million, eight hundred forty thousand, five hundred fifty-two".