1864345 has 8 divisors (see below), whose sum is σ = 2556864. Its totient is φ = 1278384.

The previous prime is 1864307. The next prime is 1864361. The reversal of 1864345 is 5434681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1864345 - 2⁷ = 1864217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26599 + ... + 26668.

It is an arithmetic number, because the mean of its divisors is an integer number (319608).

2^1864345 is an apocalyptic number.

It is an amenable number.

1864345 is a deficient number, since it is larger than the sum of its proper divisors (692519).

1864345 is an equidigital number, since it uses as much as digits as its factorization.

1864345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53279.

The product of its digits is 11520, while the sum is 31.

The square root of 1864345 is about 1365.4101947766. The cubic root of 1864345 is about 123.0765821805.

It can be divided in two parts, 1864 and 345, that added together give a square (2209 = 47²).

The spelling of 1864345 in words is "one million, eight hundred sixty-four thousand, three hundred forty-five".