2219926081 has 4 divisors (see below), whose sum is σ = 2220365872. Its totient is φ = 2219486292.

The previous prime is 2219926073. The next prime is 2219926097. The reversal of 2219926081 is 1806299122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2219926081 - 2³ = 2219926073 is a prime.

It is a super-2 number, since 2×2219926081² = 9856143610208037122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2219926001) 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, 212235 + ... + 222448.

It is an arithmetic number, because the mean of its divisors is an integer number (555091468).

Almost surely, 2^2219926081 is an apocalyptic number.

It is an amenable number.

2219926081 is a deficient number, since it is larger than the sum of its proper divisors (439791).

2219926081 is an equidigital number, since it uses as much as digits as its factorization.

2219926081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439790.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 2219926081 is about 47116.0915293279. The cubic root of 2219926081 is about 1304.5062710505.

The spelling of 2219926081 in words is "two billion, two hundred nineteen million, nine hundred twenty-six thousand, eighty-one".