16989449730 has 32 divisors (see below), whose sum is σ = 44481469248. Its totient is φ = 4118654400.

The previous prime is 16989449717. The next prime is 16989449753. The reversal of 16989449730 is 3794498961.

16989449730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25741261 + ... + 25741920.

It is an arithmetic number, because the mean of its divisors is an integer number (1390045914).

Almost surely, 2^16989449730 is an apocalyptic number.

16989449730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16989449730 is an abundant number, since it is smaller than the sum of its proper divisors (27492019518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16989449730 is a wasteful number, since it uses less digits than its factorization.

16989449730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51483202.

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 16989449730 in words is "sixteen billion, nine hundred eighty-nine million, four hundred forty-nine thousand, seven hundred thirty".