49218645 has 32 divisors (see below), whose sum is σ = 94740480. Its totient is φ = 21314880.

The previous prime is 49218593. The next prime is 49218647. The reversal of 49218645 is 54681294.

49218645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49218645 - 2⁶ = 49218581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49218647) 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 31 ways as a sum of consecutive naturals, for example, 10341 + ... + 14330.

It is an arithmetic number, because the mean of its divisors is an integer number (2960640).

Almost surely, 2^49218645 is an apocalyptic number.

It is an amenable number.

49218645 is a deficient number, since it is larger than the sum of its proper divisors (45521835).

49218645 is a wasteful number, since it uses less digits than its factorization.

49218645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24705.

The product of its digits is 69120, while the sum is 39.

The square root of 49218645 is about 7015.6001168824. The cubic root of 49218645 is about 366.4740416154.

The spelling of 49218645 in words is "forty-nine million, two hundred eighteen thousand, six hundred forty-five".