2152819 has 2 divisors, whose sum is σ = 2152820. Its totient is φ = 2152818.

The previous prime is 2152817. The next prime is 2152831. The reversal of 2152819 is 9182512.

2152819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2152819 - 2¹ = 2152817 is a prime.

It is a super-2 number, since 2×2152819² = 9269259293522, which contains 22 as substring.

Together with 2152817, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2152811) 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 as a sum of consecutive naturals, namely, 1076409 + 1076410.

It is an arithmetic number, because the mean of its divisors is an integer number (1076410).

2^2152819 is an apocalyptic number.

2152819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152819 is an equidigital number, since it uses as much as digits as its factorization.

2152819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 2152819 is about 1467.2487859937. The cubic root of 2152819 is about 129.1226724030.

The spelling of 2152819 in words is "two million, one hundred fifty-two thousand, eight hundred nineteen".