4119721644 has 48 divisors (see below), whose sum is σ = 9868336128. Its totient is φ = 1337023488.

The previous prime is 4119721637. The next prime is 4119721663. The reversal of 4119721644 is 4461279114.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89929 + ... + 127775.

It is an arithmetic number, because the mean of its divisors is an integer number (205590336).

Almost surely, 2^4119721644 is an apocalyptic number.

It is an amenable number.

4119721644 is an abundant number, since it is smaller than the sum of its proper divisors (5748614484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4119721644 is a wasteful number, since it uses less digits than its factorization.

4119721644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38094 (or 38092 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 4119721644 is about 64185.0577938511. The cubic root of 4119721644 is about 1603.0828120828.

The spelling of 4119721644 in words is "four billion, one hundred nineteen million, seven hundred twenty-one thousand, six hundred forty-four".