1983176512009 has 27 divisors (see below), whose sum is σ = 2535888553191. Its totient is φ = 1545247851840.

The previous prime is 1983176511971. The next prime is 1983176512013. The reversal of 1983176512009 is 9002156713891.

The square root of 1983176512009 is 1408253.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1955514169609 + 27662342400 = 1398397^2 + 166320^2 .

It is not a de Polignac number, because 1983176512009 - 2¹¹ = 1983176509961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1983176512909) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 108426337 + ... + 108444625.

Almost surely, 2^{1983176512009} is an apocalyptic number.

1983176512009 is the 1408253-rd square number.

1983176512009 is the 704127-th centered octagonal number.

It is an amenable number.

1983176512009 is a deficient number, since it is larger than the sum of its proper divisors (552712041182).

1983176512009 is an frugal number, since it uses more digits than its factorization.

1983176512009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36614 (or 18307 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 52.

The spelling of 1983176512009 in words is "one trillion, nine hundred eighty-three billion, one hundred seventy-six million, five hundred twelve thousand, nine".