1909225224 has 24 divisors (see below), whose sum is σ = 5170818510. Its totient is φ = 636408384.

The previous prime is 1909225223. The next prime is 1909225259. The reversal of 1909225224 is 4225229091.

It can be written as a sum of positive squares in only one way, i.e., 1481480100 + 427745124 = 38490^2 + 20682^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1909225223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13258437 + ... + 13258580.

Almost surely, 2^1909225224 is an apocalyptic number.

It is an amenable number.

1909225224 is an abundant number, since it is smaller than the sum of its proper divisors (3261593286).

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

1909225224 is a wasteful number, since it uses less digits than its factorization.

1909225224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26517029 (or 26517022 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1909225224 is about 43694.6818731983. The cubic root of 1909225224 is about 1240.5636580685.

The spelling of 1909225224 in words is "one billion, nine hundred nine million, two hundred twenty-five thousand, two hundred twenty-four".