1660002371 has 2 divisors, whose sum is σ = 1660002372. Its totient is φ = 1660002370.

The previous prime is 1660002359. The next prime is 1660002397. The reversal of 1660002371 is 1732000661.

It is an a-pointer prime, because the next prime (1660002397) can be obtained adding 1660002371 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660002371 - 2¹⁸ = 1659740227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1660002371.

It is not a weakly prime, because it can be changed into another prime (1660002271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830001185 + 830001186.

It is an arithmetic number, because the mean of its divisors is an integer number (830001186).

Almost surely, 2^1660002371 is an apocalyptic number.

1660002371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660002371 is an equidigital number, since it uses as much as digits as its factorization.

1660002371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1660002371 is about 40743.1266718695. The cubic root of 1660002371 is about 1184.0487112732.

The spelling of 1660002371 in words is "one billion, six hundred sixty million, two thousand, three hundred seventy-one".