15980983 has 2 divisors, whose sum is σ = 15980984. Its totient is φ = 15980982.

The previous prime is 15980981. The next prime is 15980999. The reversal of 15980983 is 38908951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15980983 - 2¹ = 15980981 is a prime.

It is a super-3 number, since 3×15980983³ (a number of 23 digits) contains 333 as substring.

Together with 15980981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15980981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7990491 + 7990492.

It is an arithmetic number, because the mean of its divisors is an integer number (7990492).

Almost surely, 2^15980983 is an apocalyptic number.

15980983 is a deficient number, since it is larger than the sum of its proper divisors (1).

15980983 is an equidigital number, since it uses as much as digits as its factorization.

15980983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 15980983 is about 3997.6221682395. The cubic root of 15980983 is about 251.8843374061.

The spelling of 15980983 in words is "fifteen million, nine hundred eighty thousand, nine hundred eighty-three".