1538546394000 has 1920 divisors, whose sum is σ = 6736317419520. Its totient is φ = 298722816000.

The previous prime is 1538546393987. The next prime is 1538546394023. The reversal of 1538546394000 is 4936458351.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 21075977964 + ... + 21075978036.

It is an arithmetic number, because the mean of its divisors is an integer number (3508498656).

Almost surely, 2^{1538546394000} is an apocalyptic number.

1538546394000 is a gapful number since it is divisible by the number (10) 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 1538546394000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3368158709760).

1538546394000 is an abundant number, since it is smaller than the sum of its proper divisors (5197771025520).

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

1538546394000 is an equidigital number, since it uses as much as digits as its factorization.

1538546394000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 1538546394000 in words is "one trillion, five hundred thirty-eight billion, five hundred forty-six million, three hundred ninety-four thousand".