1803806125938 has 16 divisors (see below), whose sum is σ = 4008458057760. Its totient is φ = 601268708628.

The previous prime is 1803806125879. The next prime is 1803806125967. The reversal of 1803806125938 is 8395216083081.

1803806125938 is a `hidden beast` number, since 1 + 8 + 0 + 38 + 0 + 6 + 12 + 593 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 33403817147 = 1803806125938 / (1 + 8 + 0 + 3 + 8 + 0 + 6 + 1 + 2 + 5 + 9 + 3 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16701908520 + ... + 16701908627.

It is an arithmetic number, because the mean of its divisors is an integer number (250528628610).

Almost surely, 2^{1803806125938} is an apocalyptic number.

1803806125938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1803806125938 is an abundant number, since it is smaller than the sum of its proper divisors (2204651931822).

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

1803806125938 is a wasteful number, since it uses less digits than its factorization.

1803806125938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33403817158 (or 33403817152 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 1803806125938 in words is "one trillion, eight hundred three billion, eight hundred six million, one hundred twenty-five thousand, nine hundred thirty-eight".