2541645437 has 2 divisors, whose sum is σ = 2541645438. Its totient is φ = 2541645436.

The previous prime is 2541645389. The next prime is 2541645451. The reversal of 2541645437 is 7345461452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2497900441 + 43744996 = 49979^2 + 6614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541645437 - 2¹⁸ = 2541383293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2541645394 and 2541645403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2541645487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270822718 + 1270822719.

It is an arithmetic number, because the mean of its divisors is an integer number (1270822719).

Almost surely, 2^2541645437 is an apocalyptic number.

It is an amenable number.

2541645437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541645437 is an equidigital number, since it uses as much as digits as its factorization.

2541645437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 41.

The square root of 2541645437 is about 50414.7343244016. The cubic root of 2541645437 is about 1364.7035520226.

The spelling of 2541645437 in words is "two billion, five hundred forty-one million, six hundred forty-five thousand, four hundred thirty-seven".