1864879 has 2 divisors, whose sum is σ = 1864880. Its totient is φ = 1864878.

The previous prime is 1864873. The next prime is 1864897. The reversal of 1864879 is 9784681.

Together with next prime (1864897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1864879 - 2³ = 1864871 is a prime.

It is a super-3 number, since 3×1864879³ = 19456881333718870317, which contains 333 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1864871) 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, 932439 + 932440.

It is an arithmetic number, because the mean of its divisors is an integer number (932440).

2^1864879 is an apocalyptic number.

1864879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864879 is an equidigital number, since it uses as much as digits as its factorization.

1864879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 1864879 is about 1365.6057264086. The cubic root of 1864879 is about 123.0883319051.

The spelling of 1864879 in words is "one million, eight hundred sixty-four thousand, eight hundred seventy-nine".