1828259945 has 8 divisors (see below), whose sum is σ = 2194144200. Its totient is φ = 1462453120.

The previous prime is 1828259921. The next prime is 1828259957. The reversal of 1828259945 is 5499528281.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9834496 + 1818425449 = 3136^2 + 42643^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1828259945 is a prime.

It is a super-3 number, since 3×1828259945³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

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, 70631 + ... + 92979.

It is an arithmetic number, because the mean of its divisors is an integer number (274268025).

Almost surely, 2^1828259945 is an apocalyptic number.

It is an amenable number.

1828259945 is a deficient number, since it is larger than the sum of its proper divisors (365884255).

1828259945 is a wasteful number, since it uses less digits than its factorization.

1828259945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38715.

The product of its digits is 2073600, while the sum is 53.

The square root of 1828259945 is about 42758.1564733561. The cubic root of 1828259945 is about 1222.7733969216.

The spelling of 1828259945 in words is "one billion, eight hundred twenty-eight million, two hundred fifty-nine thousand, nine hundred forty-five".