1863345475136 has 56 divisors (see below), whose sum is σ = 3745836186240. Its totient is φ = 919521907200.

The previous prime is 1863345475127. The next prime is 1863345475153. The reversal of 1863345475136 is 6315745433681.

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 7 ways as a sum of consecutive naturals, for example, 13181471 + ... + 13322081.

Almost surely, 2^{1863345475136} is an apocalyptic number.

1863345475136 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 1863345475136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1872918093120).

1863345475136 is an abundant number, since it is smaller than the sum of its proper divisors (1882490711104).

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

1863345475136 is a wasteful number, since it uses less digits than its factorization.

1863345475136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143323 (or 143313 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 56.

The spelling of 1863345475136 in words is "one trillion, eight hundred sixty-three billion, three hundred forty-five million, four hundred seventy-five thousand, one hundred thirty-six".