49281618 has 8 divisors (see below), whose sum is σ = 98563248. Its totient is φ = 16427204.

The previous prime is 49281593. The next prime is 49281647. The reversal of 49281618 is 81618294.

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

49281618 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106796 + ... + 4106807.

It is an arithmetic number, because the mean of its divisors is an integer number (12320406).

Almost surely, 2^49281618 is an apocalyptic number.

49281618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49281618 is a wasteful number, since it uses less digits than its factorization.

49281618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213608.

The product of its digits is 27648, while the sum is 39.

The square root of 49281618 is about 7020.0867516007. The cubic root of 49281618 is about 366.6302705839.

The spelling of 49281618 in words is "forty-nine million, two hundred eighty-one thousand, six hundred eighteen".