1008144889 has 2 divisors, whose sum is σ = 1008144890. Its totient is φ = 1008144888.

The previous prime is 1008144869. The next prime is 1008144979. The reversal of 1008144889 is 9884418001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1006475625 + 1669264 = 31725^2 + 1292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1008144889 - 2⁵ = 1008144857 is a prime.

It is a super-2 number, since 2×1008144889² = 2032712234433644642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1008144869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504072444 + 504072445.

It is an arithmetic number, because the mean of its divisors is an integer number (504072445).

Almost surely, 2^1008144889 is an apocalyptic number.

It is an amenable number.

1008144889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008144889 is an equidigital number, since it uses as much as digits as its factorization.

1008144889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 1008144889 is about 31751.2974380576. The cubic root of 1008144889 is about 1002.7076251493.

The spelling of 1008144889 in words is "one billion, eight million, one hundred forty-four thousand, eight hundred eighty-nine".