1660972927 has 2 divisors, whose sum is σ = 1660972928. Its totient is φ = 1660972926.

The previous prime is 1660972921. The next prime is 1660972931. The reversal of 1660972927 is 7292790661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1660972927 - 2³ = 1660972919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660972921) 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, 830486463 + 830486464.

It is an arithmetic number, because the mean of its divisors is an integer number (830486464).

Almost surely, 2^1660972927 is an apocalyptic number.

1660972927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660972927 is an equidigital number, since it uses as much as digits as its factorization.

1660972927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 1660972927 is about 40755.0356029779. The cubic root of 1660972927 is about 1184.2794261421.

The spelling of 1660972927 in words is "one billion, six hundred sixty million, nine hundred seventy-two thousand, nine hundred twenty-seven".