1858903225 has 9 divisors (see below), whose sum is σ = 2305307343. Its totient is φ = 1486950120.

The previous prime is 1858903213. The next prime is 1858903253. The reversal of 1858903225 is 5223098581.

The square root of 1858903225 is 43115.

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

It can be written as a sum of positive squares in only one way, i.e., 669205161 + 1189698064 = 25869^2 + 34492^2 .

It is not a de Polignac number, because 1858903225 - 2⁹ = 1858902713 is a prime.

It is a Duffinian number.

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, 211264 + ... + 219886.

Almost surely, 2^1858903225 is an apocalyptic number.

1858903225 is the 43115-th square number.

1858903225 is the 21558-th centered octagonal number.

It is an amenable number.

1858903225 is a deficient number, since it is larger than the sum of its proper divisors (446404118).

1858903225 is an frugal number, since it uses more digits than its factorization.

1858903225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17256 (or 8628 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The cubic root of 1858903225 is about 1229.5671742577.

The spelling of 1858903225 in words is "one billion, eight hundred fifty-eight million, nine hundred three thousand, two hundred twenty-five".