1838539869192 has 96 divisors (see below), whose sum is σ = 5487115233600. Its totient is φ = 552548642688.

The previous prime is 1838539869161. The next prime is 1838539869193. The reversal of 1838539869192 is 2919689358381.

1838539869192 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 539 + 86 + 9 + 1 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1838539869192.

It is not an unprimeable number, because it can be changed into a prime (1838539869193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22799892 + ... + 22880387.

It is an arithmetic number, because the mean of its divisors is an integer number (57157450350).

Almost surely, 2^{1838539869192} is an apocalyptic number.

1838539869192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1838539869192 is an abundant number, since it is smaller than the sum of its proper divisors (3648575364408).

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

1838539869192 is a wasteful number, since it uses less digits than its factorization.

1838539869192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45680347 (or 45680340 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 1838539869192 in words is "one trillion, eight hundred thirty-eight billion, five hundred thirty-nine million, eight hundred sixty-nine thousand, one hundred ninety-two".