1983380372671 has 4 divisors (see below), whose sum is σ = 1983410756200. Its totient is φ = 1983349989144.

The previous prime is 1983380372641. The next prime is 1983380372723. The reversal of 1983380372671 is 1762730833891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1983380372671 - 2¹¹ = 1983380370623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983380372641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15093636 + ... + 15224473.

It is an arithmetic number, because the mean of its divisors is an integer number (495852689050).

Almost surely, 2^{1983380372671} is an apocalyptic number.

1983380372671 is a deficient number, since it is larger than the sum of its proper divisors (30383529).

1983380372671 is an equidigital number, since it uses as much as digits as its factorization.

1983380372671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30383528.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 1983380372671 in words is "one trillion, nine hundred eighty-three billion, three hundred eighty million, three hundred seventy-two thousand, six hundred seventy-one".