16398894226 has 16 divisors (see below), whose sum is σ = 28898751168. Its totient is φ = 6880654800.

The previous prime is 16398894217. The next prime is 16398894227. The reversal of 16398894226 is 62249889361.

It is a super-2 number, since 2×16398894226² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16398894227) 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, 28669110 + ... + 28669681.

It is an arithmetic number, because the mean of its divisors is an integer number (1806171948).

Almost surely, 2^16398894226 is an apocalyptic number.

16398894226 is a deficient number, since it is larger than the sum of its proper divisors (12499856942).

16398894226 is a wasteful number, since it uses less digits than its factorization.

16398894226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57338817.

The product of its digits is 8957952, while the sum is 58.

The spelling of 16398894226 in words is "sixteen billion, three hundred ninety-eight million, eight hundred ninety-four thousand, two hundred twenty-six".