1864745 has 8 divisors (see below), whose sum is σ = 2245320. Its totient is φ = 1486720.

The previous prime is 1864739. The next prime is 1864769. The reversal of 1864745 is 5474681.

It can be written as a sum of positive squares in 4 ways, for example, as 346921 + 1517824 = 589^2 + 1232^2 .

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

It is not a de Polignac number, because 1864745 - 2¹⁰ = 1863721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1901 + ... + 2709.

It is an arithmetic number, because the mean of its divisors is an integer number (280665).

2^1864745 is an apocalyptic number.

It is an amenable number.

1864745 is a deficient number, since it is larger than the sum of its proper divisors (380575).

1864745 is an equidigital number, since it uses as much as digits as its factorization.

1864745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275.

The product of its digits is 26880, while the sum is 35.

The square root of 1864745 is about 1365.5566630499. The cubic root of 1864745 is about 123.0853836832.

The spelling of 1864745 in words is "one million, eight hundred sixty-four thousand, seven hundred forty-five".