1803855827926 has 4 divisors (see below), whose sum is σ = 2705783741892. Its totient is φ = 901927913962.

The previous prime is 1803855827861. The next prime is 1803855827927. The reversal of 1803855827926 is 6297285583081.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1803855827926² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803855827927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450963956980 + ... + 450963956983.

It is an arithmetic number, because the mean of its divisors is an integer number (676445935473).

Almost surely, 2^{1803855827926} is an apocalyptic number.

1803855827926 is a deficient number, since it is larger than the sum of its proper divisors (901927913966).

1803855827926 is an equidigital number, since it uses as much as digits as its factorization.

1803855827926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901927913965.

The product of its (nonzero) digits is 58060800, while the sum is 64.

It can be divided in two parts, 180385 and 5827926, that added together give a triangular number (6008311 = T₃₄₆₆).

The spelling of 1803855827926 in words is "one trillion, eight hundred three billion, eight hundred fifty-five million, eight hundred twenty-seven thousand, nine hundred twenty-six".