118727381 has 2 divisors, whose sum is σ = 118727382. Its totient is φ = 118727380.

The previous prime is 118727377. The next prime is 118727387. The reversal of 118727381 is 183727811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91374481 + 27352900 = 9559^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 118727381 - 2² = 118727377 is a prime.

It is a super-2 number, since 2×118727381² = 28192381998238322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118727387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59363690 + 59363691.

It is an arithmetic number, because the mean of its divisors is an integer number (59363691).

Almost surely, 2^118727381 is an apocalyptic number.

It is an amenable number.

118727381 is a deficient number, since it is larger than the sum of its proper divisors (1).

118727381 is an equidigital number, since it uses as much as digits as its factorization.

118727381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 38.

The square root of 118727381 is about 10896.2094785297. The cubic root of 118727381 is about 491.4925764704.

The spelling of 118727381 in words is "one hundred eighteen million, seven hundred twenty-seven thousand, three hundred eighty-one".