1320001500 has 48 divisors (see below), whose sum is σ = 3843848736. Its totient is φ = 352000000.

The previous prime is 1320001481. The next prime is 1320001523. The reversal of 1320001500 is 51000231.

1320001500 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438501 + ... + 441500.

It is an arithmetic number, because the mean of its divisors is an integer number (80080182).

Almost surely, 2^1320001500 is an apocalyptic number.

1320001500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320001500 is an abundant number, since it is smaller than the sum of its proper divisors (2523847236).

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

1320001500 is a wasteful number, since it uses less digits than its factorization.

1320001500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880023 (or 880011 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1320001500 is about 36331.8248922346. The cubic root of 1320001500 is about 1096.9617260020.

Adding to 1320001500 its reverse (51000231), we get a palindrome (1371001731).

The spelling of 1320001500 in words is "one billion, three hundred twenty million, one thousand, five hundred".