1928419 has 2 divisors, whose sum is σ = 1928420. Its totient is φ = 1928418.

The previous prime is 1928411. The next prime is 1928447. The reversal of 1928419 is 9148291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1928419 - 2³ = 1928411 is a prime.

It is a super-2 number, since 2×1928419² = 7437599679122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1928411) 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, 964209 + 964210.

It is an arithmetic number, because the mean of its divisors is an integer number (964210).

2^1928419 is an apocalyptic number.

1928419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928419 is an equidigital number, since it uses as much as digits as its factorization.

1928419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 1928419 is about 1388.6752680162. The cubic root of 1928419 is about 124.4707005670.

The spelling of 1928419 in words is "one million, nine hundred twenty-eight thousand, four hundred nineteen".