2518138965 has 8 divisors (see below), whose sum is σ = 4029022368. Its totient is φ = 1343007440.

The previous prime is 2518138937. The next prime is 2518139011. The reversal of 2518138965 is 5698318152.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2518138965 - 2⁶ = 2518138901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83937951 + ... + 83937980.

It is an arithmetic number, because the mean of its divisors is an integer number (503627796).

Almost surely, 2^2518138965 is an apocalyptic number.

It is an amenable number.

2518138965 is a deficient number, since it is larger than the sum of its proper divisors (1510883403).

2518138965 is a wasteful number, since it uses less digits than its factorization.

2518138965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167875939.

The product of its digits is 518400, while the sum is 48.

The square root of 2518138965 is about 50181.0618161872. The cubic root of 2518138965 is about 1360.4833498574.

It can be divided in two parts, 25181 and 38965, that added together give a palindrome (64146).

The spelling of 2518138965 in words is "two billion, five hundred eighteen million, one hundred thirty-eight thousand, nine hundred sixty-five".