1988814 has 16 divisors (see below), whose sum is σ = 4015440. Its totient is φ = 656640.

The previous prime is 1988807. The next prime is 1988837. The reversal of 1988814 is 4188891.

It is a happy number.

It is a super-2 number, since 2×1988814² = 7910762253192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (250965).

2^1988814 is an apocalyptic number.

1988814 is an abundant number, since it is smaller than the sum of its proper divisors (2026626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988814 is a wasteful number, since it uses less digits than its factorization.

1988814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155.

The product of its digits is 18432, while the sum is 39.

The square root of 1988814 is about 1410.2531687608. The cubic root of 1988814 is about 125.7567744270.

The spelling of 1988814 in words is "one million, nine hundred eighty-eight thousand, eight hundred fourteen".