16783988954 has 8 divisors (see below), whose sum is σ = 25177045908. Its totient is φ = 8391640320.

The previous prime is 16783988953. The next prime is 16783988957. The reversal of 16783988954 is 45988938761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11766391729 + 5017597225 = 108473^2 + 70835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16783988953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113237 + ... + 215384.

Almost surely, 2^16783988954 is an apocalyptic number.

16783988954 is a deficient number, since it is larger than the sum of its proper divisors (8393056954).

16783988954 is a wasteful number, since it uses less digits than its factorization.

16783988954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354160.

The product of its digits is 104509440, while the sum is 68.

The spelling of 16783988954 in words is "sixteen billion, seven hundred eighty-three million, nine hundred eighty-eight thousand, nine hundred fifty-four".