4418970721 has 8 divisors (see below), whose sum is σ = 4821314688. Its totient is φ = 4016730000.

The previous prime is 4418970719. The next prime is 4418970737. The reversal of 4418970721 is 1270798144.

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 4418970721 - 2¹ = 4418970719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4418970821) 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, 84031 + ... + 126091.

It is an arithmetic number, because the mean of its divisors is an integer number (602664336).

Almost surely, 2^4418970721 is an apocalyptic number.

It is an amenable number.

4418970721 is a deficient number, since it is larger than the sum of its proper divisors (402343967).

4418970721 is a wasteful number, since it uses less digits than its factorization.

4418970721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51623.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 4418970721 is about 66475.3391943208. The cubic root of 4418970721 is about 1640.9941821706.

The spelling of 4418970721 in words is "four billion, four hundred eighteen million, nine hundred seventy thousand, seven hundred twenty-one".