2489918555 has 8 divisors (see below), whose sum is σ = 3145160400. Its totient is φ = 1887096096.

The previous prime is 2489918551. The next prime is 2489918597. The reversal of 2489918555 is 5558199842.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2489918555 - 2² = 2489918551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2489918555.

It is not an unprimeable number, because it can be changed into a prime (2489918551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13104740 + ... + 13104929.

It is an arithmetic number, because the mean of its divisors is an integer number (393145050).

Almost surely, 2^2489918555 is an apocalyptic number.

2489918555 is a deficient number, since it is larger than the sum of its proper divisors (655241845).

2489918555 is a wasteful number, since it uses less digits than its factorization.

2489918555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26209693.

The product of its digits is 5184000, while the sum is 56.

The square root of 2489918555 is about 49899.0837090222. The cubic root of 2489918555 is about 1355.3820003834.

The spelling of 2489918555 in words is "two billion, four hundred eighty-nine million, nine hundred eighteen thousand, five hundred fifty-five".