1389822145 has 16 divisors (see below), whose sum is σ = 1678152960. Its totient is φ = 1104969600.

The previous prime is 1389822079. The next prime is 1389822151. The reversal of 1389822145 is 5412289831.

It is not a de Polignac number, because 1389822145 - 2¹⁵ = 1389789377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664261 + ... + 666349.

It is an arithmetic number, because the mean of its divisors is an integer number (104884560).

Almost surely, 2^1389822145 is an apocalyptic number.

It is an amenable number.

1389822145 is a deficient number, since it is larger than the sum of its proper divisors (288330815).

1389822145 is a wasteful number, since it uses less digits than its factorization.

1389822145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its digits is 138240, while the sum is 43.

The square root of 1389822145 is about 37280.3184669874. The cubic root of 1389822145 is about 1115.9714284746.

The spelling of 1389822145 in words is "one billion, three hundred eighty-nine million, eight hundred twenty-two thousand, one hundred forty-five".