2083661921 has 8 divisors (see below), whose sum is σ = 2305101888. Its totient is φ = 1867558000.

The previous prime is 2083661897. The next prime is 2083661959. The reversal of 2083661921 is 1291663802.

It is a happy number.

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

It is not a de Polignac number, because 2083661921 - 2¹⁴ = 2083645537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2083661221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1333190 + ... + 1334751.

It is an arithmetic number, because the mean of its divisors is an integer number (288137736).

Almost surely, 2^2083661921 is an apocalyptic number.

It is an amenable number.

2083661921 is a deficient number, since it is larger than the sum of its proper divisors (221439967).

2083661921 is a wasteful number, since it uses less digits than its factorization.

2083661921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668023.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2083661921 is about 45647.1458143880. The cubic root of 2083661921 is about 1277.2495304136.

The spelling of 2083661921 in words is "two billion, eighty-three million, six hundred sixty-one thousand, nine hundred twenty-one".