1901828 has 6 divisors (see below), whose sum is σ = 3328206. Its totient is φ = 950912.

The previous prime is 1901803. The next prime is 1901831. The reversal of 1901828 is 8281091.

It can be written as a sum of positive squares in only one way, i.e., 984064 + 917764 = 992^2 + 958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1901828.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237725 + ... + 237732.

It is an arithmetic number, because the mean of its divisors is an integer number (554701).

2^1901828 is an apocalyptic number.

It is an amenable number.

1901828 is a deficient number, since it is larger than the sum of its proper divisors (1426378).

1901828 is a wasteful number, since it uses less digits than its factorization.

1901828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475461 (or 475459 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1901828 is about 1379.0678010888. The cubic root of 1901828 is about 123.8959411425.

The spelling of 1901828 in words is "one million, nine hundred one thousand, eight hundred twenty-eight".