2891606286290 has 8 divisors (see below), whose sum is σ = 5204891315340. Its totient is φ = 1156642514512.

The previous prime is 2891606286271. The next prime is 2891606286299. The reversal of 2891606286290 is 926826061982.

It can be written as a sum of positive squares in 2 ways, for example, as 2853170291689 + 38435994601 = 1689133^2 + 196051^2 .

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

It is a super-2 number, since 2×2891606286290² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2891606286299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144580314305 + ... + 144580314324.

Almost surely, 2^{2891606286290} is an apocalyptic number.

2891606286290 is a deficient number, since it is larger than the sum of its proper divisors (2313285029050).

2891606286290 is a wasteful number, since it uses less digits than its factorization.

2891606286290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289160628636.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 2891606286290 in words is "two trillion, eight hundred ninety-one billion, six hundred six million, two hundred eighty-six thousand, two hundred ninety".