1838791125 has 40 divisors (see below), whose sum is σ = 3428070360. Its totient is φ = 980683200.

The previous prime is 1838791117. The next prime is 1838791187. The reversal of 1838791125 is 5211978381.

1838791125 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 54066609 + 1784724516 = 7353^2 + 42246^2 .

It is not a de Polignac number, because 1838791125 - 2³ = 1838791117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 80680 + ... + 100929.

It is an arithmetic number, because the mean of its divisors is an integer number (85701759).

Almost surely, 2^1838791125 is an apocalyptic number.

1838791125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1838791125 is a deficient number, since it is larger than the sum of its proper divisors (1589279235).

1838791125 is an equidigital number, since it uses as much as digits as its factorization.

1838791125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181636 (or 181617 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 1838791125 is about 42881.1278419773. The cubic root of 1838791125 is about 1225.1167180194.

The spelling of 1838791125 in words is "one billion, eight hundred thirty-eight million, seven hundred ninety-one thousand, one hundred twenty-five".