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13694189 = 32294241
BaseRepresentation
bin110100001111…
…010011101101
3221202201220012
4310033103231
512001203224
61205303005
7224253515
oct64172355
927681805
1013694189
117803713
124704a65
132ab6192
141b66845
15130780e
hexd0f4ed

13694189 has 4 divisors (see below), whose sum is σ = 13701660. Its totient is φ = 13686720.

The previous prime is 13694183. The next prime is 13694201. The reversal of 13694189 is 98149631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98149631 = 99199041.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 3822025 = 3142^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 13694189 - 212 = 13690093 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 (13694183) 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, 1109 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (3425415).

Almost surely, 213694189 is an apocalyptic number.

It is an amenable number.

13694189 is a deficient number, since it is larger than the sum of its proper divisors (7471).

13694189 is an equidigital number, since it uses as much as digits as its factorization.

13694189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7470.

The product of its digits is 46656, while the sum is 41.

The square root of 13694189 is about 3700.5660377839. The cubic root of 13694189 is about 239.2464152032.

The spelling of 13694189 in words is "thirteen million, six hundred ninety-four thousand, one hundred eighty-nine".

Divisors: 1 3229 4241 13694189