118015901 has 4 divisors (see below), whose sum is σ = 118084092. Its totient is φ = 117947712.

The previous prime is 118015889. The next prime is 118015913. The reversal of 118015901 is 109510811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109510811 = 6121 ⋅17891.

It is an interprime number because it is at equal distance from previous prime (118015889) and next prime (118015913).

It can be written as a sum of positive squares in 2 ways, for example, as 47623801 + 70392100 = 6901^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 118015901 - 2²⁶ = 50907037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118015991) 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, 31430 + ... + 34983.

It is an arithmetic number, because the mean of its divisors is an integer number (29521023).

Almost surely, 2^118015901 is an apocalyptic number.

It is an amenable number.

118015901 is a deficient number, since it is larger than the sum of its proper divisors (68191).

118015901 is an equidigital number, since it uses as much as digits as its factorization.

118015901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68190.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 118015901 is about 10863.5123693951. The cubic root of 118015901 is about 490.5088438883.

It can be divided in two parts, 11801 and 5901, that multiplied together give a triangular number (69637701 = T₁₁₈₀₁).

The spelling of 118015901 in words is "one hundred eighteen million, fifteen thousand, nine hundred one".