1078368989 has 2 divisors, whose sum is σ = 1078368990. Its totient is φ = 1078368988.

The previous prime is 1078368983. The next prime is 1078369009. The reversal of 1078368989 is 9898638701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900600100 + 177768889 = 30010^2 + 13333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078368989 - 2¹⁶ = 1078303453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078368983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539184494 + 539184495.

It is an arithmetic number, because the mean of its divisors is an integer number (539184495).

Almost surely, 2^1078368989 is an apocalyptic number.

It is an amenable number.

1078368989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078368989 is an equidigital number, since it uses as much as digits as its factorization.

1078368989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 59.

The square root of 1078368989 is about 32838.5290322207. The cubic root of 1078368989 is about 1025.4688282410.

The spelling of 1078368989 in words is "one billion, seventy-eight million, three hundred sixty-eight thousand, nine hundred eighty-nine".