1388950000 has 60 divisors (see below), whose sum is σ = 3363769080. Its totient is φ = 555560000.

The previous prime is 1388949973. The next prime is 1388950001. The reversal of 1388950000 is 598831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388950001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36111 + ... + 63889.

It is an arithmetic number, because the mean of its divisors is an integer number (56062818).

Almost surely, 2^1388950000 is an apocalyptic number.

1388950000 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 1388950000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681884540).

1388950000 is an abundant number, since it is smaller than the sum of its proper divisors (1974819080).

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

1388950000 is an frugal number, since it uses more digits than its factorization.

1388950000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27812 (or 27786 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1388950000 is about 37268.6195075696. The cubic root of 1388950000 is about 1115.7379471468.

The spelling of 1388950000 in words is "one billion, three hundred eighty-eight million, nine hundred fifty thousand".