118243349537 has 2 divisors, whose sum is σ = 118243349538. Its totient is φ = 118243349536.

The previous prime is 118243349489. The next prime is 118243349557. The reversal of 118243349537 is 735943342811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104530002721 + 13713346816 = 323311^2 + 117104^2 .

It is an emirp because it is prime and its reverse (735943342811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118243349537 - 2²² = 118239155233 is a prime.

It is a super-2 number, since 2×118243349537² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (118243349557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59121674768 + 59121674769.

It is an arithmetic number, because the mean of its divisors is an integer number (59121674769).

Almost surely, 2^118243349537 is an apocalyptic number.

It is an amenable number.

118243349537 is a deficient number, since it is larger than the sum of its proper divisors (1).

118243349537 is an equidigital number, since it uses as much as digits as its factorization.

118243349537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 50.

The spelling of 118243349537 in words is "one hundred eighteen billion, two hundred forty-three million, three hundred forty-nine thousand, five hundred thirty-seven".