890657738833 has 4 divisors (see below), whose sum is σ = 896635307700. Its totient is φ = 884680169968.

The previous prime is 890657738821. The next prime is 890657738837. The reversal of 890657738833 is 338837756098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 338837756098 = 2 ⋅169418878049.

It can be written as a sum of positive squares in 2 ways, for example, as 439326375489 + 451331363344 = 662817^2 + 671812^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890657738833 is a prime.

It is a super-2 number, since 2×890657738833² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890657738837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988784210 + ... + 2988784507.

It is an arithmetic number, because the mean of its divisors is an integer number (224158826925).

Almost surely, 2^890657738833 is an apocalyptic number.

It is an amenable number.

890657738833 is a deficient number, since it is larger than the sum of its proper divisors (5977568867).

890657738833 is a wasteful number, since it uses less digits than its factorization.

890657738833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5977568866.

The product of its (nonzero) digits is 182891520, while the sum is 67.

The spelling of 890657738833 in words is "eight hundred ninety billion, six hundred fifty-seven million, seven hundred thirty-eight thousand, eight hundred thirty-three".