2219511938 has 18 divisors (see below), whose sum is σ = 3873635811. Its totient is φ = 951019524.

The previous prime is 2219511919. The next prime is 2219511941. The reversal of 2219511938 is 8391159122.

It can be written as a sum of positive squares in only one way, i.e., 1109755969 + 1109755969 = 33313^2 + 33313^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33313.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2219511895 and 2219511904.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 464003 + ... + 468761.

Almost surely, 2^2219511938 is an apocalyptic number.

2219511938 is a deficient number, since it is larger than the sum of its proper divisors (1654123873).

2219511938 is an frugal number, since it uses more digits than its factorization.

2219511938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534 (or 4768 counting only the distinct ones).

The product of its digits is 38880, while the sum is 41.

The square root of 2219511938 is about 47111.6964033349. The cubic root of 2219511938 is about 1304.4251443643.

It can be divided in two parts, 221 and 9511938, that added together give a palindrome (9512159).

The spelling of 2219511938 in words is "two billion, two hundred nineteen million, five hundred eleven thousand, nine hundred thirty-eight".