1936819 has 2 divisors, whose sum is σ = 1936820. Its totient is φ = 1936818.

The previous prime is 1936817. The next prime is 1936859. The reversal of 1936819 is 9186391.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1936819 - 2¹ = 1936817 is a prime.

It is a super-2 number, since 2×1936819² = 7502535677522, which contains 22 as substring.

Together with 1936817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1936813) 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 as a sum of consecutive naturals, namely, 968409 + 968410.

It is an arithmetic number, because the mean of its divisors is an integer number (968410).

2^1936819 is an apocalyptic number.

1936819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1936819 is an equidigital number, since it uses as much as digits as its factorization.

1936819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 1936819 is about 1391.6964467872. The cubic root of 1936819 is about 124.6511660915.

The spelling of 1936819 in words is "one million, nine hundred thirty-six thousand, eight hundred nineteen".