2518634 has 4 divisors (see below), whose sum is σ = 3777954. Its totient is φ = 1259316.

The previous prime is 2518619. The next prime is 2518643. The reversal of 2518634 is 4368152.

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., 2356225 + 162409 = 1535^2 + 403^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2518597 and 2518606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629657 + ... + 629660.

2^2518634 is an apocalyptic number.

2518634 is a deficient number, since it is larger than the sum of its proper divisors (1259320).

2518634 is a wasteful number, since it uses less digits than its factorization.

2518634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259319.

The product of its digits is 5760, while the sum is 29.

The square root of 2518634 is about 1587.0204787589. The cubic root of 2518634 is about 136.0572495420.

The spelling of 2518634 in words is "two million, five hundred eighteen thousand, six hundred thirty-four".