1664111146 has 8 divisors (see below), whose sum is σ = 2496565764. Its totient is φ = 831922560.

The previous prime is 1664111129. The next prime is 1664111153. The reversal of 1664111146 is 6411114661.

It can be written as a sum of positive squares in 2 ways, for example, as 1660155025 + 3956121 = 40745^2 + 1989^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50055 + ... + 76378.

Almost surely, 2^1664111146 is an apocalyptic number.

1664111146 is a deficient number, since it is larger than the sum of its proper divisors (832454618).

1664111146 is a wasteful number, since it uses less digits than its factorization.

1664111146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133016.

The product of its digits is 3456, while the sum is 31.

The square root of 1664111146 is about 40793.5184312410. The cubic root of 1664111146 is about 1185.0248105566.

The spelling of 1664111146 in words is "one billion, six hundred sixty-four million, one hundred eleven thousand, one hundred forty-six".