1389006192 has 80 divisors (see below), whose sum is σ = 4178304000. Its totient is φ = 389366016.

The previous prime is 1389006187. The next prime is 1389006193. The reversal of 1389006192 is 2916009831.

It is a self number, because there is not a number n which added to its sum of digits gives 1389006192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389006193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21192 + ... + 56807.

It is an arithmetic number, because the mean of its divisors is an integer number (52228800).

Almost surely, 2^1389006192 is an apocalyptic number.

1389006192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1389006192 is an abundant number, since it is smaller than the sum of its proper divisors (2789297808).

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

1389006192 is a wasteful number, since it uses less digits than its factorization.

1389006192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78070 (or 78064 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1389006192 is about 37269.3733781506. The cubic root of 1389006192 is about 1115.7529932131.

The spelling of 1389006192 in words is "one billion, three hundred eighty-nine million, six thousand, one hundred ninety-two".