118215037 has 4 divisors (see below), whose sum is σ = 121410076. Its totient is φ = 115020000.

The previous prime is 118214989. The next prime is 118215061. The reversal of 118215037 is 730512811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 730512811 = 7 ⋅104358973.

It can be written as a sum of positive squares in 2 ways, for example, as 88849476 + 29365561 = 9426^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 118215037 - 2⁷ = 118214909 is a prime.

It is a super-2 number, since 2×118215037² = 27949589945822738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118214996 and 118215014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118215077) 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, 1597464 + ... + 1597537.

It is an arithmetic number, because the mean of its divisors is an integer number (30352519).

Almost surely, 2^118215037 is an apocalyptic number.

It is an amenable number.

118215037 is a deficient number, since it is larger than the sum of its proper divisors (3195039).

118215037 is an equidigital number, since it uses as much as digits as its factorization.

118215037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195038.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 118215037 is about 10872.6738661656. The cubic root of 118215037 is about 490.7845781475.

Adding to 118215037 its reverse (730512811), we get a palindrome (848727848).

The spelling of 118215037 in words is "one hundred eighteen million, two hundred fifteen thousand, thirty-seven".