1868879 has 2 divisors, whose sum is σ = 1868880. Its totient is φ = 1868878.

The previous prime is 1868863. The next prime is 1868917. The reversal of 1868879 is 9788681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1868879 - 2⁴ = 1868863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934439 + 934440.

It is an arithmetic number, because the mean of its divisors is an integer number (934440).

2^1868879 is an apocalyptic number.

1868879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868879 is an equidigital number, since it uses as much as digits as its factorization.

1868879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 47.

The square root of 1868879 is about 1367.0694934787. The cubic root of 1868879 is about 123.1762735765.

The spelling of 1868879 in words is "one million, eight hundred sixty-eight thousand, eight hundred seventy-nine".