1803274121 has 8 divisors (see below), whose sum is σ = 1977096000. Its totient is φ = 1631100240.

The previous prime is 1803274093. The next prime is 1803274147. The reversal of 1803274121 is 1214723081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1803274121 - 2²⁶ = 1736165257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1803276121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 409706 + ... + 414083.

It is an arithmetic number, because the mean of its divisors is an integer number (247137000).

Almost surely, 2^1803274121 is an apocalyptic number.

1803274121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1803274121 is a deficient number, since it is larger than the sum of its proper divisors (173821879).

1803274121 is a wasteful number, since it uses less digits than its factorization.

1803274121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823999.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1803274121 is about 42464.9752266500. The cubic root of 1803274121 is about 1217.1775029413.

The spelling of 1803274121 in words is "one billion, eight hundred three million, two hundred seventy-four thousand, one hundred twenty-one".