13820619 has 8 divisors (see below), whose sum is σ = 19397440. Its totient is φ = 8728776.

The previous prime is 13820603. The next prime is 13820621. The reversal of 13820619 is 91602831.

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

It is not a de Polignac number, because 13820619 - 2⁴ = 13820603 is a prime.

It is a super-2 number, since 2×13820619² = 382019019086322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13820629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121177 + ... + 121290.

It is an arithmetic number, because the mean of its divisors is an integer number (2424680).

Almost surely, 2^13820619 is an apocalyptic number.

13820619 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13820619 is a deficient number, since it is larger than the sum of its proper divisors (5576821).

13820619 is a wasteful number, since it uses less digits than its factorization.

13820619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242489.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 13820619 is about 3717.6093124480. The cubic root of 13820619 is about 239.9804324324.

The spelling of 13820619 in words is "thirteen million, eight hundred twenty thousand, six hundred nineteen".