2609157243 has 54 divisors (see below), whose sum is σ = 4459841652. Its totient is φ = 1351867440.

The previous prime is 2609157223. The next prime is 2609157259. The reversal of 2609157243 is 3427519062.

2609157243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2609157243 - 2⁵ = 2609157211 is a prime.

It is a super-2 number, since 2×2609157243² = 13615403037398722098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2609157223) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6812230 + ... + 6812612.

Almost surely, 2^2609157243 is an apocalyptic number.

2609157243 is a deficient number, since it is larger than the sum of its proper divisors (1850684409).

2609157243 is an equidigital number, since it uses as much as digits as its factorization.

2609157243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2609157243 is about 51079.9103660138. The cubic root of 2609157243 is about 1376.6813139621.

The spelling of 2609157243 in words is "two billion, six hundred nine million, one hundred fifty-seven thousand, two hundred forty-three".