1982104521 has 8 divisors (see below), whose sum is σ = 2645618304. Its totient is φ = 1319996880.

The previous prime is 1982104519. The next prime is 1982104543. The reversal of 1982104521 is 1254012891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1982104521 - 2¹ = 1982104519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1982104571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348241 + ... + 353886.

It is an arithmetic number, because the mean of its divisors is an integer number (330702288).

Almost surely, 2^1982104521 is an apocalyptic number.

It is an amenable number.

1982104521 is a deficient number, since it is larger than the sum of its proper divisors (663513783).

1982104521 is an equidigital number, since it uses as much as digits as its factorization.

1982104521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703071.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1982104521 is about 44520.8324383091. The cubic root of 1982104521 is about 1256.1519707472.

The spelling of 1982104521 in words is "one billion, nine hundred eighty-two million, one hundred four thousand, five hundred twenty-one".