1833530378728 has 8 divisors (see below), whose sum is σ = 3437869460130. Its totient is φ = 916765189360.

The previous prime is 1833530378723. The next prime is 1833530378767. The reversal of 1833530378728 is 8278730353381.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1644811380004 + 188718998724 = 1282502^2 + 434418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1833530378728² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1833530378723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114595648663 + ... + 114595648678.

Almost surely, 2^{1833530378728} is an apocalyptic number.

It is an amenable number.

1833530378728 is a deficient number, since it is larger than the sum of its proper divisors (1604339081402).

1833530378728 is a wasteful number, since it uses less digits than its factorization.

1833530378728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229191297347 (or 229191297343 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 1833530378728 in words is "one trillion, eight hundred thirty-three billion, five hundred thirty million, three hundred seventy-eight thousand, seven hundred twenty-eight".