2068443157 has 4 divisors (see below), whose sum is σ = 2256483456. Its totient is φ = 1880402860.

The previous prime is 2068443121. The next prime is 2068443161. The reversal of 2068443157 is 7513448602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2068443157 - 2¹⁹ = 2067918869 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068443457) 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, 94020133 + ... + 94020154.

It is an arithmetic number, because the mean of its divisors is an integer number (564120864).

Almost surely, 2^2068443157 is an apocalyptic number.

It is an amenable number.

2068443157 is a deficient number, since it is larger than the sum of its proper divisors (188040299).

2068443157 is a wasteful number, since it uses less digits than its factorization.

2068443157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188040298.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 2068443157 is about 45480.1402482446. The cubic root of 2068443157 is about 1274.1323138054.

Subtracting 2068443157 from its reverse (7513448602), we obtain a palindrome (5445005445).

The spelling of 2068443157 in words is "two billion, sixty-eight million, four hundred forty-three thousand, one hundred fifty-seven".