2443117157 has 4 divisors (see below), whose sum is σ = 2631049260. Its totient is φ = 2255185056.

The previous prime is 2443117139. The next prime is 2443117177. The reversal of 2443117157 is 7517113442.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7517113442 = 2 ⋅3758556721.

It can be written as a sum of positive squares in 2 ways, for example, as 1555434721 + 887682436 = 39439^2 + 29794^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443117157 - 2⁸ = 2443116901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443117177) 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, 93966032 + ... + 93966057.

It is an arithmetic number, because the mean of its divisors is an integer number (657762315).

Almost surely, 2^2443117157 is an apocalyptic number.

It is an amenable number.

2443117157 is a deficient number, since it is larger than the sum of its proper divisors (187932103).

2443117157 is a wasteful number, since it uses less digits than its factorization.

2443117157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187932102.

The product of its digits is 23520, while the sum is 35.

The square root of 2443117157 is about 49427.8985695326. The cubic root of 2443117157 is about 1346.8361496803.

The spelling of 2443117157 in words is "two billion, four hundred forty-three million, one hundred seventeen thousand, one hundred fifty-seven".