1022144639 has 2 divisors, whose sum is σ = 1022144640. Its totient is φ = 1022144638.

The previous prime is 1022144623. The next prime is 1022144663. The reversal of 1022144639 is 9364412201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9364412201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1022144639 - 2⁴ = 1022144623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022144689) 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 as a sum of consecutive naturals, namely, 511072319 + 511072320.

It is an arithmetic number, because the mean of its divisors is an integer number (511072320).

Almost surely, 2^1022144639 is an apocalyptic number.

1022144639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022144639 is an equidigital number, since it uses as much as digits as its factorization.

1022144639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 1022144639 is about 31970.9968408869. The cubic root of 1022144639 is about 1007.3277197022.

The spelling of 1022144639 in words is "one billion, twenty-two million, one hundred forty-four thousand, six hundred thirty-nine".