1868459 has 2 divisors, whose sum is σ = 1868460. Its totient is φ = 1868458.

The previous prime is 1868443. The next prime is 1868483. The reversal of 1868459 is 9548681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1868459 - 2⁴ = 1868443 is a prime.

It is a super-2 number, since 2×1868459² = 6982278069362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1868059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934229 + 934230.

It is an arithmetic number, because the mean of its divisors is an integer number (934230).

2^1868459 is an apocalyptic number.

1868459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868459 is an equidigital number, since it uses as much as digits as its factorization.

1868459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The square root of 1868459 is about 1366.9158715883. The cubic root of 1868459 is about 123.1670456007.

The spelling of 1868459 in words is "one million, eight hundred sixty-eight thousand, four hundred fifty-nine".