1869981407099 has 8 divisors (see below), whose sum is σ = 2018030367360. Its totient is φ = 1722533052096.

The previous prime is 1869981407081. The next prime is 1869981407111. The reversal of 1869981407099 is 9907041899681.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1869981407099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1869981407029) 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, 150144842 + ... + 150157295.

It is an arithmetic number, because the mean of its divisors is an integer number (252253795920).

Almost surely, 2^{1869981407099} is an apocalyptic number.

1869981407099 is a deficient number, since it is larger than the sum of its proper divisors (148048960261).

1869981407099 is a wasteful number, since it uses less digits than its factorization.

1869981407099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300302629.

The product of its (nonzero) digits is 70543872, while the sum is 71.

The spelling of 1869981407099 in words is "one trillion, eight hundred sixty-nine billion, nine hundred eighty-one million, four hundred seven thousand, ninety-nine".