1936921 has 8 divisors (see below), whose sum is σ = 2259200. Its totient is φ = 1659924.

The previous prime is 1936889. The next prime is 1936943. The reversal of 1936921 is 1296391.

It is not a de Polignac number, because 1936921 - 2⁵ = 1936889 is a prime.

It is a Duffinian number.

1936921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1936981) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2481 + ... + 3166.

It is an arithmetic number, because the mean of its divisors is an integer number (282400).

2^1936921 is an apocalyptic number.

It is an amenable number.

1936921 is a deficient number, since it is larger than the sum of its proper divisors (322279).

1936921 is an frugal number, since it uses more digits than its factorization.

1936921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5654 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 1936921 is about 1391.7330922271. The cubic root of 1936921 is about 124.6533542491.

The spelling of 1936921 in words is "one million, nine hundred thirty-six thousand, nine hundred twenty-one".