1021864229 has 2 divisors, whose sum is σ = 1021864230. Its totient is φ = 1021864228.

The previous prime is 1021864223. The next prime is 1021864241. The reversal of 1021864229 is 9224681201.

1021864229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791128129 + 230736100 = 28127^2 + 15190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021864229 - 2²⁸ = 753428773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021864223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510932114 + 510932115.

It is an arithmetic number, because the mean of its divisors is an integer number (510932115).

Almost surely, 2^1021864229 is an apocalyptic number.

It is an amenable number.

1021864229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021864229 is an equidigital number, since it uses as much as digits as its factorization.

1021864229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1021864229 is about 31966.6111591454. The cubic root of 1021864229 is about 1007.2355962104.

It can be divided in two parts, 10218 and 64229, that added together give a palindrome (74447).

The spelling of 1021864229 in words is "one billion, twenty-one million, eight hundred sixty-four thousand, two hundred twenty-nine".