190836219917681 has 8 divisors (see below), whose sum is σ = 205521070298880. Its totient is φ = 176152103987472.

The previous prime is 190836219917621. The next prime is 190836219917711. The reversal of 190836219917681 is 186719912638091.

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 190836219917681 - 2¹⁴ = 190836219901297 is a prime.

It is a super-2 number, since 2×190836219917681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190836219917611) 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, 183073025 + ... + 184112478.

It is an arithmetic number, because the mean of its divisors is an integer number (25690133787360).

Almost surely, 2^{190836219917681} is an apocalyptic number.

It is an amenable number.

190836219917681 is a deficient number, since it is larger than the sum of its proper divisors (14684850381199).

190836219917681 is a wasteful number, since it uses less digits than its factorization.

190836219917681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367225495.

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

The spelling of 190836219917681 in words is "one hundred ninety trillion, eight hundred thirty-six billion, two hundred nineteen million, nine hundred seventeen thousand, six hundred eighty-one".