1230081536 has 40 divisors (see below), whose sum is σ = 2491504224. Its totient is φ = 606597120.

The previous prime is 1230081499. The next prime is 1230081547. The reversal of 1230081536 is 6351800321.

It is a junction number, because it is equal to n+sod(n) for n = 1230081499 and 1230081508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20921 + ... + 53831.

Almost surely, 2^1230081536 is an apocalyptic number.

1230081536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230081536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245752112).

1230081536 is an abundant number, since it is smaller than the sum of its proper divisors (1261422688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230081536 is an frugal number, since it uses more digits than its factorization.

1230081536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33002 (or 32986 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1230081536 is about 35072.5182443462. The cubic root of 1230081536 is about 1071.4649442450.

Adding to 1230081536 its reverse (6351800321), we get a palindrome (7581881857).

The spelling of 1230081536 in words is "one billion, two hundred thirty million, eighty-one thousand, five hundred thirty-six".