2405518138 has 4 divisors (see below), whose sum is σ = 3608277210. Its totient is φ = 1202759068.

The previous prime is 2405518099. The next prime is 2405518151. The reversal of 2405518138 is 8318155042.

2405518138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2170907649 + 234610489 = 46593^2 + 15317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2405518097 and 2405518106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601379533 + ... + 601379536.

Almost surely, 2^2405518138 is an apocalyptic number.

2405518138 is a deficient number, since it is larger than the sum of its proper divisors (1202759072).

2405518138 is a wasteful number, since it uses less digits than its factorization.

2405518138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202759071.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 2405518138 is about 49046.0817803013. The cubic root of 2405518138 is about 1339.8912323537.

The spelling of 2405518138 in words is "two billion, four hundred five million, five hundred eighteen thousand, one hundred thirty-eight".