1864073 has 4 divisors (see below), whose sum is σ = 1866900. Its totient is φ = 1861248.

The previous prime is 1864069. The next prime is 1864087. The reversal of 1864073 is 3704681.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3704681 = 47 ⋅78823.

It can be written as a sum of positive squares in 2 ways, for example, as 1364224 + 499849 = 1168^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864073 - 2² = 1864069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (466725).

2^1864073 is an apocalyptic number.

It is an amenable number.

1864073 is a deficient number, since it is larger than the sum of its proper divisors (2827).

1864073 is a wasteful number, since it uses less digits than its factorization.

1864073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1864073 is about 1365.3105873756. The cubic root of 1864073 is about 123.0705964396.

The spelling of 1864073 in words is "one million, eight hundred sixty-four thousand, seventy-three".