2068891558 has 4 divisors (see below), whose sum is σ = 3103337340. Its totient is φ = 1034445778.

The previous prime is 2068891553. The next prime is 2068891577. The reversal of 2068891558 is 8551988602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8551988602 = 2 ⋅4275994301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068891553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517222888 + ... + 517222891.

It is an arithmetic number, because the mean of its divisors is an integer number (775834335).

Almost surely, 2^2068891558 is an apocalyptic number.

2068891558 is a deficient number, since it is larger than the sum of its proper divisors (1034445782).

2068891558 is a wasteful number, since it uses less digits than its factorization.

2068891558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034445781.

The product of its (nonzero) digits is 1382400, while the sum is 52.

The square root of 2068891558 is about 45485.0696163038. The cubic root of 2068891558 is about 1274.2243767534.

The spelling of 2068891558 in words is "two billion, sixty-eight million, eight hundred ninety-one thousand, five hundred fifty-eight".