1641000863854 has 8 divisors (see below), whose sum is σ = 2685274140888. Its totient is φ = 745909483560.

The previous prime is 1641000863851. The next prime is 1641000863917. The reversal of 1641000863854 is 4583680001461.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641000863851) 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 3 ways as a sum of consecutive naturals, for example, 37295474157 + ... + 37295474200.

It is an arithmetic number, because the mean of its divisors is an integer number (335659267611).

Almost surely, 2^{1641000863854} is an apocalyptic number.

1641000863854 is a deficient number, since it is larger than the sum of its proper divisors (1044273277034).

1641000863854 is a wasteful number, since it uses less digits than its factorization.

1641000863854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74590948370.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 1641000863854 in words is "one trillion, six hundred forty-one billion, eight hundred sixty-three thousand, eight hundred fifty-four".