2518486221 has 16 divisors (see below), whose sum is σ = 3546920960. Its totient is φ = 1587040560.

The previous prime is 2518486193. The next prime is 2518486241. The reversal of 2518486221 is 1226848152.

It is a happy number.

It is not a de Polignac number, because 2518486221 - 2¹⁹ = 2517961933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2518486221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2518486241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310891 + ... + 318888.

It is an arithmetic number, because the mean of its divisors is an integer number (221682560).

Almost surely, 2^2518486221 is an apocalyptic number.

It is an amenable number.

2518486221 is a deficient number, since it is larger than the sum of its proper divisors (1028434739).

2518486221 is a wasteful number, since it uses less digits than its factorization.

2518486221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629856.

The product of its digits is 61440, while the sum is 39.

The square root of 2518486221 is about 50184.5217273215. The cubic root of 2518486221 is about 1360.5458847026.

The spelling of 2518486221 in words is "two billion, five hundred eighteen million, four hundred eighty-six thousand, two hundred twenty-one".