1879643 has 2 divisors, whose sum is σ = 1879644. Its totient is φ = 1879642.

The previous prime is 1879621. The next prime is 1879663. The reversal of 1879643 is 3469781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1879643 - 2⁸ = 1879387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1879597 and 1879606.

It is not a weakly prime, because it can be changed into another prime (1879663) 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, 939821 + 939822.

It is an arithmetic number, because the mean of its divisors is an integer number (939822).

2^1879643 is an apocalyptic number.

1879643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1879643 is an equidigital number, since it uses as much as digits as its factorization.

1879643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 1879643 is about 1371.0007293944. Note that the first 3 decimals coincide. The cubic root of 1879643 is about 123.4123031302.

The spelling of 1879643 in words is "one million, eight hundred seventy-nine thousand, six hundred forty-three".