1865724052 has 12 divisors (see below), whose sum is σ = 3281935636. Its totient is φ = 928028160.

The previous prime is 1865724023. The next prime is 1865724059. The reversal of 1865724052 is 2504275681.

It can be written as a sum of positive squares in 2 ways, for example, as 1115292816 + 750431236 = 33396^2 + 27394^2 .

It is a super-2 number, since 2×1865724052² = 6961852476422597408, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1865723996 and 1865724014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1865724059) 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, 1207599 + ... + 1209142.

Almost surely, 2^1865724052 is an apocalyptic number.

It is an amenable number.

1865724052 is a deficient number, since it is larger than the sum of its proper divisors (1416211584).

1865724052 is a wasteful number, since it uses less digits than its factorization.

1865724052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416938 (or 2416936 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 1865724052 is about 43194.0279668382. The cubic root of 1865724052 is about 1231.0692119588.

The spelling of 1865724052 in words is "one billion, eight hundred sixty-five million, seven hundred twenty-four thousand, fifty-two".