1671664996 has 9 divisors (see below), whose sum is σ = 2925556851. Its totient is φ = 835791612.

The previous prime is 1671664949. The next prime is 1671665003. The reversal of 1671664996 is 6994661761.

The square root of 1671664996 is 40886.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71551 + ... + 91993.

Almost surely, 2^1671664996 is an apocalyptic number.

1671664996 is the 40886-th square number.

It is an amenable number.

1671664996 is a deficient number, since it is larger than the sum of its proper divisors (1253891855).

1671664996 is an frugal number, since it uses more digits than its factorization.

1671664996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40890 (or 20445 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The cubic root of 1671664996 is about 1186.8151535705.

The spelling of 1671664996 in words is "one billion, six hundred seventy-one million, six hundred sixty-four thousand, nine hundred ninety-six".