16434156838 has 24 divisors (see below), whose sum is σ = 27154193976. Its totient is φ = 7454024160.

The previous prime is 16434156793. The next prime is 16434156839. The reversal of 16434156838 is 83865143461.

It is a junction number, because it is equal to n+sod(n) for n = 16434156791 and 16434156800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16434156839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40306 + ... + 185722.

It is an arithmetic number, because the mean of its divisors is an integer number (1131424749).

Almost surely, 2^16434156838 is an apocalyptic number.

16434156838 is a deficient number, since it is larger than the sum of its proper divisors (10720037138).

16434156838 is a wasteful number, since it uses less digits than its factorization.

16434156838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145908 (or 145897 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The spelling of 16434156838 in words is "sixteen billion, four hundred thirty-four million, one hundred fifty-six thousand, eight hundred thirty-eight".