13135819 has 8 divisors (see below), whose sum is σ = 13561920. Its totient is φ = 12716616.

The previous prime is 13135813. The next prime is 13135823. The reversal of 13135819 is 91853131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13135819 - 2⁹ = 13135307 is a prime.

It is a super-2 number, since 2×13135819² = 345099481601522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13135813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2292 + ... + 5614.

It is an arithmetic number, because the mean of its divisors is an integer number (1695240).

Almost surely, 2^13135819 is an apocalyptic number.

13135819 is a deficient number, since it is larger than the sum of its proper divisors (426101).

13135819 is an equidigital number, since it uses as much as digits as its factorization.

13135819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

The product of its digits is 3240, while the sum is 31.

The square root of 13135819 is about 3624.3370428259. The cubic root of 13135819 is about 235.9494948421.

The spelling of 13135819 in words is "thirteen million, one hundred thirty-five thousand, eight hundred nineteen".