16198061 has 4 divisors (see below), whose sum is σ = 17670624. Its totient is φ = 14725500.

The previous prime is 16197989. The next prime is 16198069. The reversal of 16198061 is 16089161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16089161 = 11 ⋅1462651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16198061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16198069) 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, 736265 + ... + 736286.

It is an arithmetic number, because the mean of its divisors is an integer number (4417656).

Almost surely, 2^16198061 is an apocalyptic number.

16198061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16198061 is a deficient number, since it is larger than the sum of its proper divisors (1472563).

16198061 is a wasteful number, since it uses less digits than its factorization.

16198061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472562.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 16198061 is about 4024.6814780800. The cubic root of 16198061 is about 253.0197040276.

Subtracting from 16198061 its reverse (16089161), we obtain a square (108900 = 330²).

The spelling of 16198061 in words is "sixteen million, one hundred ninety-eight thousand, sixty-one".