4781918 has 8 divisors (see below), whose sum is σ = 7183848. Its totient is φ = 2387304.

The previous prime is 4781911. The next prime is 4781923. The reversal of 4781918 is 8191874.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4781911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305 + ... + 3107.

It is an arithmetic number, because the mean of its divisors is an integer number (897981).

Almost surely, 2^4781918 is an apocalyptic number.

4781918 is a deficient number, since it is larger than the sum of its proper divisors (2401930).

4781918 is a wasteful number, since it uses less digits than its factorization.

4781918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658.

The product of its digits is 16128, while the sum is 38.

The square root of 4781918 is about 2186.7597033053. The cubic root of 4781918 is about 168.4744477803.

The spelling of 4781918 in words is "four million, seven hundred eighty-one thousand, nine hundred eighteen".