16840347989 has 8 divisors (see below), whose sum is σ = 17573966592. Its totient is φ = 16106848560.

The previous prime is 16840347971. The next prime is 16840348003. The reversal of 16840347989 is 98974304861.

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

It is a cyclic number.

It is not a de Polignac number, because 16840347989 - 2¹² = 16840343893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840347089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377732 + ... + 419954.

It is an arithmetic number, because the mean of its divisors is an integer number (2196745824).

Almost surely, 2^16840347989 is an apocalyptic number.

It is an amenable number.

16840347989 is a deficient number, since it is larger than the sum of its proper divisors (733618603).

16840347989 is a wasteful number, since it uses less digits than its factorization.

16840347989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59587.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 16840347989 in words is "sixteen billion, eight hundred forty million, three hundred forty-seven thousand, nine hundred eighty-nine".