2218075772 has 12 divisors (see below), whose sum is σ = 4234508376. Its totient is φ = 1008216240.

The previous prime is 2218075763. The next prime is 2218075777. The reversal of 2218075772 is 2775708122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218075777) 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, 25205363 + ... + 25205450.

It is an arithmetic number, because the mean of its divisors is an integer number (352875698).

Almost surely, 2^2218075772 is an apocalyptic number.

2218075772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2218075772 is a deficient number, since it is larger than the sum of its proper divisors (2016432604).

2218075772 is a wasteful number, since it uses less digits than its factorization.

2218075772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50410828 (or 50410826 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 2218075772 is about 47096.4517984105. The cubic root of 2218075772 is about 1304.1437348618.

The spelling of 2218075772 in words is "two billion, two hundred eighteen million, seventy-five thousand, seven hundred seventy-two".