1001660049 has 24 divisors (see below), whose sum is σ = 1570429952. Its totient is φ = 611543520.

The previous prime is 1001660021. The next prime is 1001660071. The reversal of 1001660049 is 9400661001.

1001660049 is a `hidden beast` number, since 1 + 0 + 0 + 16 + 600 + 49 = 666.

It is not a de Polignac number, because 1001660049 - 2⁷ = 1001659921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001670049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18847 + ... + 48564.

Almost surely, 2^1001660049 is an apocalyptic number.

It is an amenable number.

1001660049 is a deficient number, since it is larger than the sum of its proper divisors (568769903).

1001660049 is a wasteful number, since it uses less digits than its factorization.

1001660049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67557 (or 67554 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1001660049 is about 31649.0133969449. The cubic root of 1001660049 is about 1000.5530437529.

The spelling of 1001660049 in words is "one billion, one million, six hundred sixty thousand, forty-nine".