537744409 has 2 divisors, whose sum is σ = 537744410. Its totient is φ = 537744408.

The previous prime is 537744379. The next prime is 537744457. The reversal of 537744409 is 904447735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509495184 + 28249225 = 22572^2 + 5315^2 .

It is a cyclic number.

It is not a de Polignac number, because 537744409 - 2⁷ = 537744281 is a prime.

It is not a weakly prime, because it can be changed into another prime (537744469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268872204 + 268872205.

It is an arithmetic number, because the mean of its divisors is an integer number (268872205).

Almost surely, 2^537744409 is an apocalyptic number.

It is an amenable number.

537744409 is a deficient number, since it is larger than the sum of its proper divisors (1).

537744409 is an equidigital number, since it uses as much as digits as its factorization.

537744409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 43.

The square root of 537744409 is about 23189.3166997219. The cubic root of 537744409 is about 813.1898848771.

The spelling of 537744409 in words is "five hundred thirty-seven million, seven hundred forty-four thousand, four hundred nine".