118240537 has 4 divisors (see below), whose sum is σ = 118264320. Its totient is φ = 118216756.

The previous prime is 118240531. The next prime is 118240561. The reversal of 118240537 is 735042811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 735042811 = 12373 ⋅59407.

It is a cyclic number.

It is not a de Polignac number, because 118240537 - 2¹⁵ = 118207769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118240499 and 118240508.

It is not an unprimeable number, because it can be changed into a prime (118240531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273 + ... + 15430.

It is an arithmetic number, because the mean of its divisors is an integer number (29566080).

Almost surely, 2^118240537 is an apocalyptic number.

It is an amenable number.

118240537 is a deficient number, since it is larger than the sum of its proper divisors (23783).

118240537 is an equidigital number, since it uses as much as digits as its factorization.

118240537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23782.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 118240537 is about 10873.8464675569. The cubic root of 118240537 is about 490.8198644283.

The spelling of 118240537 in words is "one hundred eighteen million, two hundred forty thousand, five hundred thirty-seven".