1022260639 has 2 divisors, whose sum is σ = 1022260640. Its totient is φ = 1022260638.

The previous prime is 1022260637. The next prime is 1022260823. The reversal of 1022260639 is 9360622201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022260639 - 2¹ = 1022260637 is a prime.

Together with 1022260637, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1022260639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022260637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511130319 + 511130320.

It is an arithmetic number, because the mean of its divisors is an integer number (511130320).

Almost surely, 2^1022260639 is an apocalyptic number.

1022260639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022260639 is an equidigital number, since it uses as much as digits as its factorization.

1022260639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1022260639 is about 31972.8109336667. The cubic root of 1022260639 is about 1007.3658244188.

The spelling of 1022260639 in words is "one billion, twenty-two million, two hundred sixty thousand, six hundred thirty-nine".