16438717834 has 64 divisors (see below), whose sum is σ = 32580506880. Its totient is φ = 6022471680.

The previous prime is 16438717819. The next prime is 16438717837. The reversal of 16438717834 is 43871783461.

It is not an unprimeable number, because it can be changed into a prime (16438717837) 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, 3896094 + ... + 3900310.

It is an arithmetic number, because the mean of its divisors is an integer number (509070420).

Almost surely, 2^16438717834 is an apocalyptic number.

16438717834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16438717834 is a deficient number, since it is larger than the sum of its proper divisors (16141789046).

16438717834 is a wasteful number, since it uses less digits than its factorization.

16438717834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743.

The product of its digits is 2709504, while the sum is 52.

The spelling of 16438717834 in words is "sixteen billion, four hundred thirty-eight million, seven hundred seventeen thousand, eight hundred thirty-four".