118140415 has 4 divisors (see below), whose sum is σ = 141768504. Its totient is φ = 94512328.

The previous prime is 118140383. The next prime is 118140419. The reversal of 118140415 is 514041811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514041811 = 317 ⋅1621583.

It is a cyclic number.

It is not a de Polignac number, because 118140415 - 2⁵ = 118140383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118140415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118140419) 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, 11814037 + ... + 11814046.

It is an arithmetic number, because the mean of its divisors is an integer number (35442126).

Almost surely, 2^118140415 is an apocalyptic number.

118140415 is a deficient number, since it is larger than the sum of its proper divisors (23628089).

118140415 is an equidigital number, since it uses as much as digits as its factorization.

118140415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23628088.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 118140415 is about 10869.2416938809. The cubic root of 118140415 is about 490.6812888749.

The spelling of 118140415 in words is "one hundred eighteen million, one hundred forty thousand, four hundred fifteen".