1938570539136 has 512 divisors, whose sum is σ = 6634275840000. Its totient is φ = 497121730560.

The previous prime is 1938570539131. The next prime is 1938570539173. The reversal of 1938570539136 is 6319350758391.

It is a self number, because there is not a number n which added to its sum of digits gives 1938570539136.

It is not an unprimeable number, because it can be changed into a prime (1938570539131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114449260 + ... + 114466196.

It is an arithmetic number, because the mean of its divisors is an integer number (12957570000).

Almost surely, 2^{1938570539136} is an apocalyptic number.

1938570539136 is a gapful number since it is divisible by the number (16) 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 1938570539136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3317137920000).

1938570539136 is an abundant number, since it is smaller than the sum of its proper divisors (4695705300864).

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

1938570539136 is a wasteful number, since it uses less digits than its factorization.

1938570539136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17065 (or 17039 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 60.

The spelling of 1938570539136 in words is "one trillion, nine hundred thirty-eight billion, five hundred seventy million, five hundred thirty-nine thousand, one hundred thirty-six".