1889206225 has 9 divisors (see below), whose sum is σ = 2342885233. Its totient is φ = 1511191120.

The previous prime is 1889206211. The next prime is 1889206259. The reversal of 1889206225 is 5226029881.

The square root of 1889206225 is 43465.

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

It can be written as a sum of positive squares in 4 ways, for example, as 782712529 + 1106493696 = 27977^2 + 33264^2 .

It is not a de Polignac number, because 1889206225 - 2⁷ = 1889206097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 212979 + ... + 221671.

Almost surely, 2^1889206225 is an apocalyptic number.

1889206225 is the 43465-th square number.

1889206225 is the 21733-rd centered octagonal number.

It is an amenable number.

1889206225 is a deficient number, since it is larger than the sum of its proper divisors (453679008).

1889206225 is an frugal number, since it uses more digits than its factorization.

1889206225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17396 (or 8698 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The cubic root of 1889206225 is about 1236.2124771741.

The spelling of 1889206225 in words is "one billion, eight hundred eighty-nine million, two hundred six thousand, two hundred twenty-five".