16489700409 has 32 divisors (see below), whose sum is σ = 28651795200. Its totient is φ = 8186222592.

The previous prime is 16489700399. The next prime is 16489700441. The reversal of 16489700409 is 90400798461.

It is not a de Polignac number, because 16489700409 - 2²¹ = 16487603257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16489708409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1771884 + ... + 1781165.

It is an arithmetic number, because the mean of its divisors is an integer number (895368600).

Almost surely, 2^16489700409 is an apocalyptic number.

It is an amenable number.

16489700409 is a deficient number, since it is larger than the sum of its proper divisors (12162094791).

16489700409 is a wasteful number, since it uses less digits than its factorization.

16489700409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3553089.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 16489700409 in words is "sixteen billion, four hundred eighty-nine million, seven hundred thousand, four hundred nine".