1011988 has 12 divisors (see below), whose sum is σ = 1778112. Its totient is φ = 503960.

The previous prime is 1011979. The next prime is 1012007. The reversal of 1011988 is 8891101.

1011988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1431 + ... + 2017.

It is an arithmetic number, because the mean of its divisors is an integer number (148176).

2^1011988 is an apocalyptic number.

It is an amenable number.

1011988 is a deficient number, since it is larger than the sum of its proper divisors (766124).

1011988 is a wasteful number, since it uses less digits than its factorization.

1011988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 1011988 is about 1005.9761428583. The cubic root of 1011988 is about 100.3980137488.

The spelling of 1011988 in words is "one million, eleven thousand, nine hundred eighty-eight".