1983180745 has 32 divisors (see below), whose sum is σ = 2991356928. Its totient is φ = 1228566528.

The previous prime is 1983180743. The next prime is 1983180751. The reversal of 1983180745 is 5470813891.

It is a happy number.

It is not a de Polignac number, because 1983180745 - 2¹ = 1983180743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1983180695 and 1983180704.

It is not an unprimeable number, because it can be changed into a prime (1983180743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24984 + ... + 67753.

It is an arithmetic number, because the mean of its divisors is an integer number (93479904).

Almost surely, 2^1983180745 is an apocalyptic number.

It is an amenable number.

1983180745 is a deficient number, since it is larger than the sum of its proper divisors (1008176183).

1983180745 is a wasteful number, since it uses less digits than its factorization.

1983180745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92809.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 1983180745 is about 44532.9175442167. The cubic root of 1983180745 is about 1256.3792807061.

It can be divided in two parts, 19831 and 80745, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 1983180745 in words is "one billion, nine hundred eighty-three million, one hundred eighty thousand, seven hundred forty-five".