49719618 has 96 divisors (see below), whose sum is σ = 125012160. Its totient is φ = 14152320.

The previous prime is 49719613. The next prime is 49719623. The reversal of 49719618 is 81691794.

It is a happy number.

49719618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (49719613) and next prime (49719623).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49719613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235533 + ... + 235743.

It is an arithmetic number, because the mean of its divisors is an integer number (1302210).

Almost surely, 2^49719618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49719618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62506080).

49719618 is an abundant number, since it is smaller than the sum of its proper divisors (75292542).

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

49719618 is a wasteful number, since it uses less digits than its factorization.

49719618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 301 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 49719618 is about 7051.2139380393. The cubic root of 49719618 is about 367.7132345739.

The spelling of 49719618 in words is "forty-nine million, seven hundred nineteen thousand, six hundred eighteen".