2191610094919 has 24 divisors (see below), whose sum is σ = 2552779879440. Its totient is φ = 1876051933056.

The previous prime is 2191610094907. The next prime is 2191610094931. The reversal of 2191610094919 is 9194900161912.

It is an interprime number because it is at equal distance from previous prime (2191610094907) and next prime (2191610094931).

It is not a de Polignac number, because 2191610094919 - 2¹⁷ = 2191609963847 is a prime.

It is a super-4 number, since 4×2191610094919⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191610094019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123552619 + ... + 123570355.

It is an arithmetic number, because the mean of its divisors is an integer number (106365828310).

Almost surely, 2^{2191610094919} is an apocalyptic number.

2191610094919 is a deficient number, since it is larger than the sum of its proper divisors (361169784521).

2191610094919 is a wasteful number, since it uses less digits than its factorization.

2191610094919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20927 (or 20920 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 52.

The spelling of 2191610094919 in words is "two trillion, one hundred ninety-one billion, six hundred ten million, ninety-four thousand, nine hundred nineteen".