1838720164652 has 48 divisors (see below), whose sum is σ = 3908572362240. Its totient is φ = 739299975552.

The previous prime is 1838720164643. The next prime is 1838720164663. The reversal of 1838720164652 is 2564610278381.

It is a super-2 number, since 2×1838720164652² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1838720164594 and 1838720164603.

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 15 ways as a sum of consecutive naturals, for example, 16723073 + ... + 16832664.

It is an arithmetic number, because the mean of its divisors is an integer number (81428590880).

Almost surely, 2^{1838720164652} is an apocalyptic number.

It is an amenable number.

1838720164652 is an abundant number, since it is smaller than the sum of its proper divisors (2069852197588).

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

1838720164652 is a wasteful number, since it uses less digits than its factorization.

1838720164652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33555870 (or 33555868 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 1838720164652 in words is "one trillion, eight hundred thirty-eight billion, seven hundred twenty million, one hundred sixty-four thousand, six hundred fifty-two".