1852512380838 has 48 divisors (see below), whose sum is σ = 4735146863616. Its totient is φ = 512215403760.

The previous prime is 1852512380819. The next prime is 1852512380843. The reversal of 1852512380838 is 8380832152581.

1852512380838 is a `hidden beast` number, since 1 + 8 + 5 + 251 + 2 + 380 + 8 + 3 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237132856 + ... + 237140667.

It is an arithmetic number, because the mean of its divisors is an integer number (98648892992).

Almost surely, 2^{1852512380838} is an apocalyptic number.

1852512380838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1852512380838 is an abundant number, since it is smaller than the sum of its proper divisors (2882634482778).

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

1852512380838 is a wasteful number, since it uses less digits than its factorization.

1852512380838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474273569 (or 474273566 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 1852512380838 in words is "one trillion, eight hundred fifty-two billion, five hundred twelve million, three hundred eighty thousand, eight hundred thirty-eight".