2191931165339 has 8 divisors (see below), whose sum is σ = 2264185112880. Its totient is φ = 2120362089696.

The previous prime is 2191931165269. The next prime is 2191931165377. The reversal of 2191931165339 is 9335611391912.

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

It is a cyclic number.

It is not a de Polignac number, because 2191931165339 - 2¹² = 2191931161243 is a prime.

It is a super-3 number, since 3×2191931165339³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2191931165639) 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, 171211469 + ... + 171224270.

It is an arithmetic number, because the mean of its divisors is an integer number (283023139110).

Almost surely, 2^{2191931165339} is an apocalyptic number.

2191931165339 is a deficient number, since it is larger than the sum of its proper divisors (72253947541).

2191931165339 is a wasteful number, since it uses less digits than its factorization.

2191931165339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342435949.

The product of its digits is 1180980, while the sum is 53.

The spelling of 2191931165339 in words is "two trillion, one hundred ninety-one billion, nine hundred thirty-one million, one hundred sixty-five thousand, three hundred thirty-nine".