1389968919633 has 32 divisors (see below), whose sum is σ = 2151635537920. Its totient is φ = 781769102400.

The previous prime is 1389968919631. The next prime is 1389968919653. The reversal of 1389968919633 is 3369198699831.

It is not a de Polignac number, because 1389968919633 - 2¹ = 1389968919631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389968919631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1665085 + ... + 2356362.

It is an arithmetic number, because the mean of its divisors is an integer number (67238610560).

Almost surely, 2^{1389968919633} is an apocalyptic number.

It is an amenable number.

1389968919633 is a deficient number, since it is larger than the sum of its proper divisors (761666618287).

1389968919633 is a wasteful number, since it uses less digits than its factorization.

1389968919633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021717.

The product of its digits is 408146688, while the sum is 75.

The spelling of 1389968919633 in words is "one trillion, three hundred eighty-nine billion, nine hundred sixty-eight million, nine hundred nineteen thousand, six hundred thirty-three".