16438453474 has 16 divisors (see below), whose sum is σ = 24792526080. Its totient is φ = 8174350800.

The previous prime is 16438453429. The next prime is 16438453477. The reversal of 16438453474 is 47435483461.

It is not an unprimeable number, because it can be changed into a prime (16438453477) 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, 451212 + ... + 486280.

It is an arithmetic number, because the mean of its divisors is an integer number (1549532880).

Almost surely, 2^16438453474 is an apocalyptic number.

16438453474 is a deficient number, since it is larger than the sum of its proper divisors (8354072606).

16438453474 is a wasteful number, since it uses less digits than its factorization.

16438453474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36345.

The product of its digits is 3870720, while the sum is 49.

The spelling of 16438453474 in words is "sixteen billion, four hundred thirty-eight million, four hundred fifty-three thousand, four hundred seventy-four".