2543842436 has 24 divisors (see below), whose sum is σ = 4729032000. Its totient is φ = 1193919264.

The previous prime is 2543842391. The next prime is 2543842439. The reversal of 2543842436 is 6342483452.

It is a super-2 number, since 2×2543842436² = 12942268678388828192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2543842393 and 2543842402.

It is not an unprimeable number, because it can be changed into a prime (2543842439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145256 + ... + 161823.

It is an arithmetic number, because the mean of its divisors is an integer number (197043000).

Almost surely, 2^2543842436 is an apocalyptic number.

It is an amenable number.

2543842436 is a deficient number, since it is larger than the sum of its proper divisors (2185189564).

2543842436 is a wasteful number, since it uses less digits than its factorization.

2543842436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307211 (or 307209 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The square root of 2543842436 is about 50436.5188727374. The cubic root of 2543842436 is about 1365.0966554840.

The spelling of 2543842436 in words is "two billion, five hundred forty-three million, eight hundred forty-two thousand, four hundred thirty-six".