1389245206888 has 32 divisors (see below), whose sum is σ = 3247586199360. Its totient is φ = 541264366080.

The previous prime is 1389245206883. The next prime is 1389245206949. The reversal of 1389245206888 is 8886025429831.

It is a super-2 number, since 2×1389245206888² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1389245206883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127633481 + ... + 1127634712.

It is an arithmetic number, because the mean of its divisors is an integer number (101487068730).

Almost surely, 2^{1389245206888} is an apocalyptic number.

It is an amenable number.

1389245206888 is an abundant number, since it is smaller than the sum of its proper divisors (1858340992472).

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

1389245206888 is a wasteful number, since it uses less digits than its factorization.

1389245206888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255268217 (or 2255268213 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 64.

The spelling of 1389245206888 in words is "one trillion, three hundred eighty-nine billion, two hundred forty-five million, two hundred six thousand, eight hundred eighty-eight".