1389288600 has 144 divisors (see below), whose sum is σ = 5332270320. Its totient is φ = 317548800.

The previous prime is 1389288553. The next prime is 1389288613. The reversal of 1389288600 is 68829831.

1389288600 is a `hidden beast` number, since 1 + 38 + 9 + 2 + 8 + 8 + 600 = 666.

1389288600 is digitally balanced in base 4, 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 (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42531 + ... + 67730.

It is an arithmetic number, because the mean of its divisors is an integer number (37029655).

Almost surely, 2^1389288600 is an apocalyptic number.

1389288600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389288600 is an abundant number, since it is smaller than the sum of its proper divisors (3942981720).

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

1389288600 is a wasteful number, since it uses less digits than its factorization.

1389288600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110290 (or 110278 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1389288600 is about 37273.1619265122. The cubic root of 1389288600 is about 1115.8286051196.

The spelling of 1389288600 in words is "one billion, three hundred eighty-nine million, two hundred eighty-eight thousand, six hundred".