1868788 has 6 divisors (see below), whose sum is σ = 3270386. Its totient is φ = 934392.

The previous prime is 1868777. The next prime is 1868807. The reversal of 1868788 is 8878681.

It can be written as a sum of positive squares in only one way, i.e., 1747684 + 121104 = 1322^2 + 348^2 .

It is a congruent number.

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, 233595 + ... + 233602.

2^1868788 is an apocalyptic number.

It is an amenable number.

1868788 is a deficient number, since it is larger than the sum of its proper divisors (1401598).

1868788 is a wasteful number, since it uses less digits than its factorization.

1868788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467201 (or 467199 counting only the distinct ones).

The product of its digits is 172032, while the sum is 46.

The square root of 1868788 is about 1367.0362102007. The cubic root of 1868788 is about 123.1742742991.

The spelling of 1868788 in words is "one million, eight hundred sixty-eight thousand, seven hundred eighty-eight".