1891936 has 12 divisors (see below), whose sum is σ = 3724812. Its totient is φ = 945952.

The previous prime is 1891933. The next prime is 1891949. The reversal of 1891936 is 6391981.

It is a junction number, because it is equal to n+sod(n) for n = 1891895 and 1891904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891933) 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 as a sum of consecutive naturals, namely, 29530 + ... + 29593.

It is an arithmetic number, because the mean of its divisors is an integer number (310401).

2^1891936 is an apocalyptic number.

1891936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1891936 is a deficient number, since it is larger than the sum of its proper divisors (1832876).

1891936 is an equidigital number, since it uses as much as digits as its factorization.

1891936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59133 (or 59125 counting only the distinct ones).

The product of its digits is 11664, while the sum is 37.

The square root of 1891936 is about 1375.4766446581. The cubic root of 1891936 is about 123.6807605051.

The spelling of 1891936 in words is "one million, eight hundred ninety-one thousand, nine hundred thirty-six".