1389100608 has 336 divisors, whose sum is σ = 4754880000. Its totient is φ = 387459072.

The previous prime is 1389100579. The next prime is 1389100633. The reversal of 1389100608 is 8060019831.

1389100608 is a `hidden beast` number, since 1 + 38 + 9 + 10 + 0 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15607828 + ... + 15607916.

Almost surely, 2^1389100608 is an apocalyptic number.

1389100608 is a gapful number since it is divisible by the number (18) 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 1389100608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2377440000).

1389100608 is an abundant number, since it is smaller than the sum of its proper divisors (3365779392).

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

1389100608 is an equidigital number, since it uses as much as digits as its factorization.

1389100608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1389100608 is about 37270.6400267020. The cubic root of 1389100608 is about 1115.7782732895.

The spelling of 1389100608 in words is "one billion, three hundred eighty-nine million, one hundred thousand, six hundred eight".