1864253329 has 3 divisors (see below), whose sum is σ = 1864296507. Its totient is φ = 1864210152.

The previous prime is 1864253311. The next prime is 1864253401. The reversal of 1864253329 is 9233524681.

The square root of 1864253329 is 43177.

It is a perfect power (a square), and thus also a powerful number.

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: 9233524681 = 3167 ⋅2915543.

It can be written as a sum of positive squares in only one way, i.e., 1132659025 + 731594304 = 33655^2 + 27048^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1864253329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864253129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21589 + ... + 64765.

It is an arithmetic number, because the mean of its divisors is an integer number (621432169).

Almost surely, 2^1864253329 is an apocalyptic number.

1864253329 is the 43177-th square number.

1864253329 is the 21589-th centered octagonal number.

It is an amenable number.

1864253329 is a deficient number, since it is larger than the sum of its proper divisors (43178).

1864253329 is an frugal number, since it uses more digits than its factorization.

1864253329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86354 (or 43177 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The cubic root of 1864253329 is about 1230.7456489685.

The spelling of 1864253329 in words is "one billion, eight hundred sixty-four million, two hundred fifty-three thousand, three hundred twenty-nine".