3918989089 has 2 divisors, whose sum is σ = 3918989090. Its totient is φ = 3918989088.

The previous prime is 3918989069. The next prime is 3918989119. The reversal of 3918989089 is 9809898193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3319718689 + 599270400 = 57617^2 + 24480^2 .

It is an emirp because it is prime and its reverse (9809898193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3918989089 - 2⁷ = 3918988961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3918989089.

It is not a weakly prime, because it can be changed into another prime (3918989069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959494544 + 1959494545.

It is an arithmetic number, because the mean of its divisors is an integer number (1959494545).

Almost surely, 2^3918989089 is an apocalyptic number.

It is an amenable number.

3918989089 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918989089 is an equidigital number, since it uses as much as digits as its factorization.

3918989089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10077696, while the sum is 64.

The square root of 3918989089 is about 62601.8297576037. The cubic root of 3918989089 is about 1576.6114809239.

The spelling of 3918989089 in words is "three billion, nine hundred eighteen million, nine hundred eighty-nine thousand, eighty-nine".