1988468 has 6 divisors (see below), whose sum is σ = 3479826. Its totient is φ = 994232.

The previous prime is 1988453. The next prime is 1988471. The reversal of 1988468 is 8648891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1024144 + 964324 = 1012^2 + 982^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 248555 + ... + 248562.

It is an arithmetic number, because the mean of its divisors is an integer number (579971).

2^1988468 is an apocalyptic number.

It is an amenable number.

1988468 is a deficient number, since it is larger than the sum of its proper divisors (1491358).

1988468 is a wasteful number, since it uses less digits than its factorization.

1988468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497121 (or 497119 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 1988468 is about 1410.1304904157. The cubic root of 1988468 is about 125.7494812416.

The spelling of 1988468 in words is "one million, nine hundred eighty-eight thousand, four hundred sixty-eight".