1008722641 has 2 divisors, whose sum is σ = 1008722642. Its totient is φ = 1008722640.

The previous prime is 1008722633. The next prime is 1008722669. The reversal of 1008722641 is 1462278001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812022016 + 196700625 = 28496^2 + 14025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008722641 - 2³ = 1008722633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1008723641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504361320 + 504361321.

It is an arithmetic number, because the mean of its divisors is an integer number (504361321).

Almost surely, 2^1008722641 is an apocalyptic number.

It is an amenable number.

1008722641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008722641 is an equidigital number, since it uses as much as digits as its factorization.

1008722641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1008722641 is about 31760.3942198456. The cubic root of 1008722641 is about 1002.8991339002.

The spelling of 1008722641 in words is "one billion, eight million, seven hundred twenty-two thousand, six hundred forty-one".