1660071146 has 8 divisors (see below), whose sum is σ = 2490407904. Its totient is φ = 829935180.

The previous prime is 1660071109. The next prime is 1660071167. The reversal of 1660071146 is 6411700661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 27470 + ... + 63833.

It is an arithmetic number, because the mean of its divisors is an integer number (311300988).

Almost surely, 2^1660071146 is an apocalyptic number.

1660071146 is a deficient number, since it is larger than the sum of its proper divisors (830336758).

1660071146 is an equidigital number, since it uses as much as digits as its factorization.

1660071146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100396.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1660071146 is about 40743.9706705176. The cubic root of 1660071146 is about 1184.0650630220.

The spelling of 1660071146 in words is "one billion, six hundred sixty million, seventy-one thousand, one hundred forty-six".