1684972801 has 16 divisors (see below), whose sum is σ = 1854720000. Its totient is φ = 1523629008.

The previous prime is 1684972753. The next prime is 1684972823. The reversal of 1684972801 is 1082794861.

It is a cyclic number.

It is not a de Polignac number, because 1684972801 - 2¹³ = 1684964609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1684972841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214200 + ... + 221926.

It is an arithmetic number, because the mean of its divisors is an integer number (115920000).

Almost surely, 2^1684972801 is an apocalyptic number.

It is an amenable number.

1684972801 is a deficient number, since it is larger than the sum of its proper divisors (169747199).

1684972801 is a wasteful number, since it uses less digits than its factorization.

1684972801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8268.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 1684972801 is about 41048.4202010260. The cubic root of 1684972801 is about 1189.9561693246.

The spelling of 1684972801 in words is "one billion, six hundred eighty-four million, nine hundred seventy-two thousand, eight hundred one".