1389408124632 has 256 divisors, whose sum is σ = 4016850739200. Its totient is φ = 396688596480.

The previous prime is 1389408124607. The next prime is 1389408124651. The reversal of 1389408124632 is 2364218049831.

It is a super-2 number, since 2×1389408124632² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38594913 + ... + 38630895.

It is an arithmetic number, because the mean of its divisors is an integer number (15690823200).

Almost surely, 2^{1389408124632} is an apocalyptic number.

1389408124632 is a gapful number since it is divisible by the number (12) 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 1389408124632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008425369600).

1389408124632 is an abundant number, since it is smaller than the sum of its proper divisors (2627442614568).

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

1389408124632 is a wasteful number, since it uses less digits than its factorization.

1389408124632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36166 (or 36162 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 1389408124632 in words is "one trillion, three hundred eighty-nine billion, four hundred eight million, one hundred twenty-four thousand, six hundred thirty-two".