118989641 has 2 divisors, whose sum is σ = 118989642. Its totient is φ = 118989640.

The previous prime is 118989631. The next prime is 118989659. The reversal of 118989641 is 146989811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74046025 + 44943616 = 8605^2 + 6704^2 .

It is an emirp because it is prime and its reverse (146989811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118989641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118989631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59494820 + 59494821.

It is an arithmetic number, because the mean of its divisors is an integer number (59494821).

Almost surely, 2^118989641 is an apocalyptic number.

It is an amenable number.

118989641 is a deficient number, since it is larger than the sum of its proper divisors (1).

118989641 is an equidigital number, since it uses as much as digits as its factorization.

118989641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 47.

The square root of 118989641 is about 10908.2373003158. The cubic root of 118989641 is about 491.8542005793.

The spelling of 118989641 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, six hundred forty-one".