1028440537 has 2 divisors, whose sum is σ = 1028440538. Its totient is φ = 1028440536.

The previous prime is 1028440507. The next prime is 1028440549. The reversal of 1028440537 is 7350448201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 900660121 + 127780416 = 30011^2 + 11304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028440537 - 2¹⁵ = 1028407769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028440507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514220268 + 514220269.

It is an arithmetic number, because the mean of its divisors is an integer number (514220269).

Almost surely, 2^1028440537 is an apocalyptic number.

It is an amenable number.

1028440537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028440537 is an equidigital number, since it uses as much as digits as its factorization.

1028440537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1028440537 is about 32069.3083336701. The cubic root of 1028440537 is about 1009.3916988640.

Adding to 1028440537 its reverse (7350448201), we get a palindrome (8378888738).

The spelling of 1028440537 in words is "one billion, twenty-eight million, four hundred forty thousand, five hundred thirty-seven".