1983520923 has 16 divisors (see below), whose sum is σ = 2653994496. Its totient is φ = 1317708000.

The previous prime is 1983520879. The next prime is 1983520927. The reversal of 1983520923 is 3290253891.

It is not a de Polignac number, because 1983520923 - 2⁹ = 1983520411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1983520927) 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, 1704940 + ... + 1706102.

It is an arithmetic number, because the mean of its divisors is an integer number (165874656).

Almost surely, 2^1983520923 is an apocalyptic number.

1983520923 is a deficient number, since it is larger than the sum of its proper divisors (670473573).

1983520923 is a wasteful number, since it uses less digits than its factorization.

1983520923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 1983520923 is about 44536.7367798765. The cubic root of 1983520923 is about 1256.4511128134.

The spelling of 1983520923 in words is "one billion, nine hundred eighty-three million, five hundred twenty thousand, nine hundred twenty-three".