1921038 has 32 divisors (see below), whose sum is σ = 4478976. Its totient is φ = 537888.

The previous prime is 1921037. The next prime is 1921063. The reversal of 1921038 is 8301291.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1920999 and 1921017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1795 + ... + 2657.

It is an arithmetic number, because the mean of its divisors is an integer number (139968).

2^1921038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1921038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239488).

1921038 is an abundant number, since it is smaller than the sum of its proper divisors (2557938).

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

1921038 is a wasteful number, since it uses less digits than its factorization.

1921038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1921038 is about 1386.0151514323. The cubic root of 1921038 is about 124.3116941707.

The spelling of 1921038 in words is "one million, nine hundred twenty-one thousand, thirty-eight".