1022864849 has 2 divisors, whose sum is σ = 1022864850. Its totient is φ = 1022864848.

The previous prime is 1022864827. The next prime is 1022864923. The reversal of 1022864849 is 9484682201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1021441600 + 1423249 = 31960^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022864849 - 2¹⁶ = 1022799313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1022864819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511432424 + 511432425.

It is an arithmetic number, because the mean of its divisors is an integer number (511432425).

Almost surely, 2^1022864849 is an apocalyptic number.

It is an amenable number.

1022864849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022864849 is an equidigital number, since it uses as much as digits as its factorization.

1022864849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 1022864849 is about 31982.2583474025. The cubic root of 1022864849 is about 1007.5642541226.

The spelling of 1022864849 in words is "one billion, twenty-two million, eight hundred sixty-four thousand, eight hundred forty-nine".