118941661 has 2 divisors, whose sum is σ = 118941662. Its totient is φ = 118941660.

The previous prime is 118941611. The next prime is 118941709. The reversal of 118941661 is 166149811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 7322436 = 10565^2 + 2706^2 .

It is an emirp because it is prime and its reverse (166149811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118941661 - 2¹⁵ = 118908893 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118941661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118941611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59470830 + 59470831.

It is an arithmetic number, because the mean of its divisors is an integer number (59470831).

Almost surely, 2^118941661 is an apocalyptic number.

It is an amenable number.

118941661 is a deficient number, since it is larger than the sum of its proper divisors (1).

118941661 is an equidigital number, since it uses as much as digits as its factorization.

118941661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 37.

The square root of 118941661 is about 10906.0378231510. The cubic root of 118941661 is about 491.7880818342.

The spelling of 118941661 in words is "one hundred eighteen million, nine hundred forty-one thousand, six hundred sixty-one".