1894861869009 has 8 divisors (see below), whose sum is σ = 2526489205920. Its totient is φ = 1263237889056.

The previous prime is 1894861869001. The next prime is 1894861869029. The reversal of 1894861869009 is 9009681684981.

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

It is not a de Polignac number, because 1894861869009 - 2³ = 1894861869001 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1894861869001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154394 + ... + 2263260.

It is an arithmetic number, because the mean of its divisors is an integer number (315811150740).

Almost surely, 2^{1894861869009} is an apocalyptic number.

It is an amenable number.

1894861869009 is a deficient number, since it is larger than the sum of its proper divisors (631627336911).

1894861869009 is a wasteful number, since it uses less digits than its factorization.

1894861869009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678479.

The product of its (nonzero) digits is 53747712, while the sum is 69.

The spelling of 1894861869009 in words is "one trillion, eight hundred ninety-four billion, eight hundred sixty-one million, eight hundred sixty-nine thousand, nine".