1987168 has 12 divisors (see below), whose sum is σ = 3912300. Its totient is φ = 993568.

The previous prime is 1987157. The next prime is 1987189. The reversal of 1987168 is 8617891.

It is a self number, because there is not a number n which added to its sum of digits gives 1987168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31018 + ... + 31081.

It is an arithmetic number, because the mean of its divisors is an integer number (326025).

2^1987168 is an apocalyptic number.

1987168 is the 754-th centered heptagonal number.

It is an amenable number.

1987168 is a deficient number, since it is larger than the sum of its proper divisors (1925132).

1987168 is an equidigital number, since it uses as much as digits as its factorization.

1987168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62109 (or 62101 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 1987168 is about 1409.6694648037. The cubic root of 1987168 is about 125.7220715367.

The spelling of 1987168 in words is "one million, nine hundred eighty-seven thousand, one hundred sixty-eight".