16128963 has 20 divisors (see below), whose sum is σ = 24254208. Its totient is φ = 10681200.

The previous prime is 16128961. The next prime is 16128989. The reversal of 16128963 is 36982161.

It is not a de Polignac number, because 16128963 - 2¹ = 16128961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16128961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13438 + ... + 14588.

Almost surely, 2^16128963 is an apocalyptic number.

16128963 is a deficient number, since it is larger than the sum of its proper divisors (8125245).

16128963 is a wasteful number, since it uses less digits than its factorization.

16128963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336 (or 1327 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16128963 is about 4016.0880219437. The cubic root of 16128963 is about 252.6594124556.

The spelling of 16128963 in words is "sixteen million, one hundred twenty-eight thousand, nine hundred sixty-three".