1994215099919 has 8 divisors (see below), whose sum is σ = 2279351286048. Its totient is φ = 1709140992480.

The previous prime is 1994215099897. The next prime is 1994215099951. The reversal of 1994215099919 is 9199905124991.

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-1994215099919 is a prime.

It is a super-2 number, since 2×1994215099919² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994215099619) 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, 15450812 + ... + 15579345.

It is an arithmetic number, because the mean of its divisors is an integer number (284918910756).

Almost surely, 2^{1994215099919} is an apocalyptic number.

1994215099919 is a deficient number, since it is larger than the sum of its proper divisors (285136186129).

1994215099919 is an equidigital number, since it uses as much as digits as its factorization.

1994215099919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31039345.

The product of its (nonzero) digits is 21257640, while the sum is 68.

The spelling of 1994215099919 in words is "one trillion, nine hundred ninety-four billion, two hundred fifteen million, ninety-nine thousand, nine hundred nineteen".