4129219081 has 9 divisors (see below), whose sum is σ = 4472189319. Its totient is φ = 3810815736.

The previous prime is 4129219067. The next prime is 4129219103. The reversal of 4129219081 is 1809129214.

The square root of 4129219081 is 64259.

It is a perfect power (a square), and thus also a powerful number.

4129219081 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 610831225 + 3518387856 = 24715^2 + 59316^2 .

It is not a de Polignac number, because 4129219081 - 2⁷ = 4129218953 is a prime.

It is a super-2 number, since 2×4129219081² = 34100900437788969122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4129219081.

It is not an unprimeable number, because it can be changed into a prime (4129219681) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 832896 + ... + 837838.

Almost surely, 2^4129219081 is an apocalyptic number.

4129219081 is the 64259-th square number.

4129219081 is the 32130-th centered octagonal number.

It is an amenable number.

4129219081 is a deficient number, since it is larger than the sum of its proper divisors (342970238).

4129219081 is an frugal number, since it uses more digits than its factorization.

4129219081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912 (or 4956 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The cubic root of 4129219081 is about 1604.3137603893.

The spelling of 4129219081 in words is "four billion, one hundred twenty-nine million, two hundred nineteen thousand, eighty-one".