1989536 has 24 divisors (see below), whose sum is σ = 3971520. Its totient is φ = 980928.

The previous prime is 1989517. The next prime is 1989551. The reversal of 1989536 is 6359891.

1989536 = T₇₃ + T₇₄ + ... + T₂₃₀.

It is a junction number, because it is equal to n+sod(n) for n = 1989493 and 1989502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (165480).

2^1989536 is an apocalyptic number.

1989536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1989536 is a deficient number, since it is larger than the sum of its proper divisors (1981984).

1989536 is an equidigital number, since it uses as much as digits as its factorization.

1989536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 868 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 1989536 is about 1410.5091279393. The cubic root of 1989536 is about 125.7719904311.

The spelling of 1989536 in words is "one million, nine hundred eighty-nine thousand, five hundred thirty-six".