13750819 has 4 divisors (see below), whose sum is σ = 13924960. Its totient is φ = 13576680.

The previous prime is 13750801. The next prime is 13750823. The reversal of 13750819 is 91805731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91805731 = 43 ⋅2135017.

It is a cyclic number.

It is not a de Polignac number, because 13750819 - 2⁵ = 13750787 is a prime.

It is a super-2 number, since 2×13750819² = 378170046341522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13750829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86952 + ... + 87109.

It is an arithmetic number, because the mean of its divisors is an integer number (3481240).

Almost surely, 2^13750819 is an apocalyptic number.

13750819 is a deficient number, since it is larger than the sum of its proper divisors (174141).

13750819 is an equidigital number, since it uses as much as digits as its factorization.

13750819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174140.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 13750819 is about 3708.2096758409. The cubic root of 13750819 is about 239.5757493319.

The spelling of 13750819 in words is "thirteen million, seven hundred fifty thousand, eight hundred nineteen".