1988612 has 6 divisors (see below), whose sum is σ = 3480078. Its totient is φ = 994304.

The previous prime is 1988611. The next prime is 1988633. The reversal of 1988612 is 2168891.

It can be written as a sum of positive squares in only one way, i.e., 1401856 + 586756 = 1184^2 + 766^2 .

It is not an unprimeable number, because it can be changed into a prime (1988611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248573 + ... + 248580.

It is an arithmetic number, because the mean of its divisors is an integer number (580013).

2^1988612 is an apocalyptic number.

It is an amenable number.

1988612 is a deficient number, since it is larger than the sum of its proper divisors (1491466).

1988612 is a wasteful number, since it uses less digits than its factorization.

1988612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497157 (or 497155 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 1988612 is about 1410.1815485958. The cubic root of 1988612 is about 125.7525166585.

The spelling of 1988612 in words is "one million, nine hundred eighty-eight thousand, six hundred twelve".