1238404045392 has 480 divisors, whose sum is σ = 3731622410880. Its totient is φ = 397397145600.

The previous prime is 1238404045367. The next prime is 1238404045399. The reversal of 1238404045392 is 2935404048321.

1238404045392 is a `hidden beast` number, since 1 + 2 + 38 + 40 + 40 + 4 + 539 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238404045399) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3267556659 + ... + 3267557037.

It is an arithmetic number, because the mean of its divisors is an integer number (7774213356).

Almost surely, 2^{1238404045392} is an apocalyptic number.

1238404045392 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 1238404045392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865811205440).

1238404045392 is an abundant number, since it is smaller than the sum of its proper divisors (2493218365488).

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

1238404045392 is a wasteful number, since it uses less digits than its factorization.

1238404045392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 1238404045392 in words is "one trillion, two hundred thirty-eight billion, four hundred four million, forty-five thousand, three hundred ninety-two".