1239281330 has 64 divisors (see below), whose sum is σ = 2625903360. Its totient is φ = 412210944.

The previous prime is 1239281321. The next prime is 1239281333. The reversal of 1239281330 is 331829321.

It is not an unprimeable number, because it can be changed into a prime (1239281333) 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 31 ways as a sum of consecutive naturals, for example, 1602824 + ... + 1603596.

It is an arithmetic number, because the mean of its divisors is an integer number (41029740).

Almost surely, 2^1239281330 is an apocalyptic number.

1239281330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1239281330 is an abundant number, since it is smaller than the sum of its proper divisors (1386622030).

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

1239281330 is a wasteful number, since it uses less digits than its factorization.

1239281330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1239281330 is about 35203.4278160522. The cubic root of 1239281330 is about 1074.1294787760.

The spelling of 1239281330 in words is "one billion, two hundred thirty-nine million, two hundred eighty-one thousand, three hundred thirty".