16119987 has 16 divisors (see below), whose sum is σ = 24154368. Its totient is φ = 9488160.

The previous prime is 16119979. The next prime is 16119989. The reversal of 16119987 is 78991161.

It is not a de Polignac number, because 16119987 - 2³ = 16119979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16119989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8089 + ... + 9882.

It is an arithmetic number, because the mean of its divisors is an integer number (1509648).

Almost surely, 2^16119987 is an apocalyptic number.

16119987 is a deficient number, since it is larger than the sum of its proper divisors (8034381).

16119987 is a wasteful number, since it uses less digits than its factorization.

16119987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18010.

The product of its digits is 27216, while the sum is 42.

The square root of 16119987 is about 4014.9703610363. The cubic root of 16119987 is about 252.6125342254.

The spelling of 16119987 in words is "sixteen million, one hundred nineteen thousand, nine hundred eighty-seven".