1838103640 has 16 divisors (see below), whose sum is σ = 4135733280. Its totient is φ = 735241440.

The previous prime is 1838103637. The next prime is 1838103647. The reversal of 1838103640 is 463018381.

It is a junction number, because it is equal to n+sod(n) for n = 1838103596 and 1838103605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838103647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22976256 + ... + 22976335.

It is an arithmetic number, because the mean of its divisors is an integer number (258483330).

Almost surely, 2^1838103640 is an apocalyptic number.

1838103640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838103640 is an abundant number, since it is smaller than the sum of its proper divisors (2297629640).

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

1838103640 is a wasteful number, since it uses less digits than its factorization.

1838103640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45952602 (or 45952598 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 1838103640 is about 42873.1109204825. The cubic root of 1838103640 is about 1224.9640172688.

The spelling of 1838103640 in words is "one billion, eight hundred thirty-eight million, one hundred three thousand, six hundred forty".