2135517418 has 8 divisors (see below), whose sum is σ = 3211511940. Its totient is φ = 1065013440.

The previous prime is 2135517413. The next prime is 2135517421. The reversal of 2135517418 is 8147155312.

It can be written as a sum of positive squares in 2 ways, for example, as 1923436449 + 212080969 = 43857^2 + 14563^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2135517413) 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, 1371663 + ... + 1373218.

Almost surely, 2^2135517418 is an apocalyptic number.

2135517418 is a deficient number, since it is larger than the sum of its proper divisors (1075994522).

2135517418 is a wasteful number, since it uses less digits than its factorization.

2135517418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745272.

The product of its digits is 33600, while the sum is 37.

The square root of 2135517418 is about 46211.6588968628. The cubic root of 2135517418 is about 1287.7583443376.

The spelling of 2135517418 in words is "two billion, one hundred thirty-five million, five hundred seventeen thousand, four hundred eighteen".