16189481930 has 16 divisors (see below), whose sum is σ = 29159908200. Its totient is φ = 6471605952.

The previous prime is 16189481911. The next prime is 16189481947. The reversal of 16189481930 is 3918498161.

It can be written as a sum of positive squares in 4 ways, for example, as 13858233841 + 2331248089 = 117721^2 + 48283^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507089 + ... + 538068.

Almost surely, 2^16189481930 is an apocalyptic number.

16189481930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16189481930 is a deficient number, since it is larger than the sum of its proper divisors (12970426270).

16189481930 is a wasteful number, since it uses less digits than its factorization.

16189481930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046713.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 16189481930 in words is "sixteen billion, one hundred eighty-nine million, four hundred eighty-one thousand, nine hundred thirty".