2513618 has 4 divisors (see below), whose sum is σ = 3770430. Its totient is φ = 1256808.

The previous prime is 2513617. The next prime is 2513653. The reversal of 2513618 is 8163152.

2513618 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., 2393209 + 120409 = 1547^2 + 347^2 .

It is a super-4 number, since 4×2513618⁴ (a number of 27 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2513617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628403 + ... + 628406.

2^2513618 is an apocalyptic number.

2513618 is a deficient number, since it is larger than the sum of its proper divisors (1256812).

2513618 is a wasteful number, since it uses less digits than its factorization.

2513618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256811.

The product of its digits is 1440, while the sum is 26.

The square root of 2513618 is about 1585.4393712785. The cubic root of 2513618 is about 135.9668676498.

The spelling of 2513618 in words is "two million, five hundred thirteen thousand, six hundred eighteen".