16945409803 has 8 divisors (see below), whose sum is σ = 19385615072. Its totient is φ = 14510062656.

The previous prime is 16945409801. The next prime is 16945409837. The reversal of 16945409803 is 30890454961.

It is a happy number.

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 16945409803 - 2¹ = 16945409801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16945409801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207050 + ... + 1221007.

It is an arithmetic number, because the mean of its divisors is an integer number (2423201884).

Almost surely, 2^16945409803 is an apocalyptic number.

16945409803 is a deficient number, since it is larger than the sum of its proper divisors (2440205269).

16945409803 is an equidigital number, since it uses as much as digits as its factorization.

16945409803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429061.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 16945409803 in words is "sixteen billion, nine hundred forty-five million, four hundred nine thousand, eight hundred three".