1600331665 has 8 divisors (see below), whose sum is σ = 1920627648. Its totient is φ = 1280112240.

The previous prime is 1600331653. The next prime is 1600331683. The reversal of 1600331665 is 5661330061.

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

It is not a de Polignac number, because 1600331665 - 2⁵ = 1600331633 is a prime.

It is a super-2 number, since 2×1600331665² = 5122122876003344450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48750 + ... + 74680.

It is an arithmetic number, because the mean of its divisors is an integer number (240078456).

Almost surely, 2^1600331665 is an apocalyptic number.

It is an amenable number.

1600331665 is a deficient number, since it is larger than the sum of its proper divisors (320295983).

1600331665 is a wasteful number, since it uses less digits than its factorization.

1600331665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38279.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1600331665 is about 40004.1455976752. The cubic root of 1600331665 is about 1169.6879058969.

The spelling of 1600331665 in words is "one billion, six hundred million, three hundred thirty-one thousand, six hundred sixty-five".