1828519021 has 16 divisors (see below), whose sum is σ = 2239536384. Its totient is φ = 1458635904.

The previous prime is 1828519009. The next prime is 1828519039. The reversal of 1828519021 is 1209158281.

It is not a de Polignac number, because 1828519021 - 2¹¹ = 1828516973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1828519001) 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, 147520 + ... + 159433.

It is an arithmetic number, because the mean of its divisors is an integer number (139971024).

Almost surely, 2^1828519021 is an apocalyptic number.

It is an amenable number.

1828519021 is a deficient number, since it is larger than the sum of its proper divisors (411017363).

1828519021 is a wasteful number, since it uses less digits than its factorization.

1828519021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307020.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 1828519021 is about 42761.1859166698. The cubic root of 1828519021 is about 1222.8311524355.

The spelling of 1828519021 in words is "one billion, eight hundred twenty-eight million, five hundred nineteen thousand, twenty-one".