1854354378803 has 4 divisors (see below), whose sum is σ = 1854357125208. Its totient is φ = 1854351632400.

The previous prime is 1854354378761. The next prime is 1854354378823. The reversal of 1854354378803 is 3088734534581.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1854354378803 - 2¹² = 1854354374707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1854354378823) 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, 421100 + ... + 1971302.

It is an arithmetic number, because the mean of its divisors is an integer number (463589281302).

Almost surely, 2^{1854354378803} is an apocalyptic number.

1854354378803 is a deficient number, since it is larger than the sum of its proper divisors (2746405).

1854354378803 is a wasteful number, since it uses less digits than its factorization.

1854354378803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2746404.

The product of its (nonzero) digits is 38707200, while the sum is 59.

The spelling of 1854354378803 in words is "one trillion, eight hundred fifty-four billion, three hundred fifty-four million, three hundred seventy-eight thousand, eight hundred three".