16198087 has 4 divisors (see below), whose sum is σ = 16314760. Its totient is φ = 16081416.

The previous prime is 16198069. The next prime is 16198099. The reversal of 16198087 is 78089161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78089161 = 43 ⋅1816027.

It is a cyclic number.

It is not a de Polignac number, because 16198087 - 2⁷ = 16197959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16198387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58128 + ... + 58405.

It is an arithmetic number, because the mean of its divisors is an integer number (4078690).

Almost surely, 2^16198087 is an apocalyptic number.

16198087 is a deficient number, since it is larger than the sum of its proper divisors (116673).

16198087 is a wasteful number, since it uses less digits than its factorization.

16198087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116672.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16198087 is about 4024.6847081480. The cubic root of 16198087 is about 253.0198394041.

The spelling of 16198087 in words is "sixteen million, one hundred ninety-eight thousand, eighty-seven".