1921134 has 32 divisors (see below), whose sum is σ = 4062240. Its totient is φ = 604800.

The previous prime is 1921133. The next prime is 1921159. The reversal of 1921134 is 4311291.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1921134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921133) 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 15 ways as a sum of consecutive naturals, for example, 10524 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (126945).

2^1921134 is an apocalyptic number.

1921134 is an abundant number, since it is smaller than the sum of its proper divisors (2141106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1921134 is a wasteful number, since it uses less digits than its factorization.

1921134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its digits is 216, while the sum is 21.

The square root of 1921134 is about 1386.0497826557. The cubic root of 1921134 is about 124.3137648783.

It can be divided in two parts, 192 and 1134, that added together give a triangular number (1326 = T₅₁).

The spelling of 1921134 in words is "one million, nine hundred twenty-one thousand, one hundred thirty-four".