1921996 has 6 divisors (see below), whose sum is σ = 3363500. Its totient is φ = 960996.

The previous prime is 1921981. The next prime is 1922027. The reversal of 1921996 is 6991291.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240246 + ... + 240253.

2^1921996 is an apocalyptic number.

It is an amenable number.

1921996 is a deficient number, since it is larger than the sum of its proper divisors (1441504).

1921996 is a wasteful number, since it uses less digits than its factorization.

1921996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480503 (or 480501 counting only the distinct ones).

The product of its digits is 8748, while the sum is 37.

The square root of 1921996 is about 1386.3607034246. The cubic root of 1921996 is about 124.3323550169.

The spelling of 1921996 in words is "one million, nine hundred twenty-one thousand, nine hundred ninety-six".