1028940629 has 2 divisors, whose sum is σ = 1028940630. Its totient is φ = 1028940628.

The previous prime is 1028940617. The next prime is 1028940637. The reversal of 1028940629 is 9260498201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1017482404 + 11458225 = 31898^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028940629 - 2⁴ = 1028940613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028940529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514470314 + 514470315.

It is an arithmetic number, because the mean of its divisors is an integer number (514470315).

Almost surely, 2^1028940629 is an apocalyptic number.

It is an amenable number.

1028940629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028940629 is an equidigital number, since it uses as much as digits as its factorization.

1028940629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1028940629 is about 32077.1044360304. The cubic root of 1028940629 is about 1009.5552821072. Note that the first 3 decimals are identical.

The spelling of 1028940629 in words is "one billion, twenty-eight million, nine hundred forty thousand, six hundred twenty-nine".