1022243643 has 36 divisors (see below), whose sum is σ = 1648497240. Its totient is φ = 606624768.

The previous prime is 1022243641. The next prime is 1022243657. The reversal of 1022243643 is 3463422201.

1022243643 is a `hidden beast` number, since 1 + 0 + 222 + 436 + 4 + 3 = 666.

It is not a de Polignac number, because 1022243643 - 2¹ = 1022243641 is a prime.

It is a super-2 number, since 2×1022243643² = 2089964131307822898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022243641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1723555 + ... + 1724147.

It is an arithmetic number, because the mean of its divisors is an integer number (45791590).

Almost surely, 2^1022243643 is an apocalyptic number.

1022243643 is a deficient number, since it is larger than the sum of its proper divisors (626253597).

1022243643 is an equidigital number, since it uses as much as digits as its factorization.

1022243643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1022243643 is about 31972.5451442327. The cubic root of 1022243643 is about 1007.3602416011.

Adding to 1022243643 its reverse (3463422201), we get a palindrome (4485665844).

The spelling of 1022243643 in words is "one billion, twenty-two million, two hundred forty-three thousand, six hundred forty-three".