118186137 has 12 divisors (see below), whose sum is σ = 179698480. Its totient is φ = 74643768.

The previous prime is 118186129. The next prime is 118186147. The reversal of 118186137 is 731681811.

It is a happy number.

It is not a de Polignac number, because 118186137 - 2³ = 118186129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118186127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345403 + ... + 345744.

Almost surely, 2^118186137 is an apocalyptic number.

It is an amenable number.

118186137 is a deficient number, since it is larger than the sum of its proper divisors (61512343).

118186137 is a wasteful number, since it uses less digits than its factorization.

118186137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691172 (or 691169 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 118186137 is about 10871.3447650233. The cubic root of 118186137 is about 490.7445808943.

It can be divided in two parts, 11818 and 6137, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 118186137 in words is "one hundred eighteen million, one hundred eighty-six thousand, one hundred thirty-seven".