1996538 has 8 divisors (see below), whose sum is σ = 3125088. Its totient is φ = 954844.

The previous prime is 1996529. The next prime is 1996543. The reversal of 1996538 is 8356991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1996495 and 1996504.

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, 21656 + ... + 21747.

It is an arithmetic number, because the mean of its divisors is an integer number (390636).

2^1996538 is an apocalyptic number.

1996538 is a deficient number, since it is larger than the sum of its proper divisors (1128550).

1996538 is a wasteful number, since it uses less digits than its factorization.

1996538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43428.

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

The square root of 1996538 is about 1412.9890303891. The cubic root of 1996538 is about 125.9193655581.

The spelling of 1996538 in words is "one million, nine hundred ninety-six thousand, five hundred thirty-eight".