1380401500 has 48 divisors (see below), whose sum is σ = 3021520320. Its totient is φ = 550929600.

The previous prime is 1380401497. The next prime is 1380401507. The reversal of 1380401500 is 51040831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380401507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240666 + ... + 246334.

It is an arithmetic number, because the mean of its divisors is an integer number (62948340).

Almost surely, 2^1380401500 is an apocalyptic number.

1380401500 is a gapful number since it is divisible by the number (10) 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 1380401500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510760160).

1380401500 is an abundant number, since it is smaller than the sum of its proper divisors (1641118820).

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

1380401500 is a wasteful number, since it uses less digits than its factorization.

1380401500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1380401500 is about 37153.7548573492. The cubic root of 1380401500 is about 1113.4442431570. Note that the first 3 decimals are identical.

The spelling of 1380401500 in words is "one billion, three hundred eighty million, four hundred one thousand, five hundred".