1664031016 has 8 divisors (see below), whose sum is σ = 3120058170. Its totient is φ = 832015504.

The previous prime is 1664030999. The next prime is 1664031067. The reversal of 1664031016 is 6101304661.

It can be written as a sum of positive squares in only one way, i.e., 1159130116 + 504900900 = 34046^2 + 22470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104001931 + ... + 104001946.

Almost surely, 2^1664031016 is an apocalyptic number.

It is an amenable number.

1664031016 is a deficient number, since it is larger than the sum of its proper divisors (1456027154).

1664031016 is a wasteful number, since it uses less digits than its factorization.

1664031016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208003883 (or 208003879 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1664031016 is about 40792.5362780987. The cubic root of 1664031016 is about 1185.0057898795.

Adding to 1664031016 its reverse (6101304661), we get a palindrome (7765335677).

The spelling of 1664031016 in words is "one billion, six hundred sixty-four million, thirty-one thousand, sixteen".