1849430025 has 81 divisors (see below), whose sum is σ = 3440907093. Its totient is φ = 949550400.

The previous prime is 1849429991. The next prime is 1849430029. The reversal of 1849430025 is 5200349481.

The square root of 1849430025 is 43005.

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 851880969 + 997549056 = 29187^2 + 31584^2 .

It is not a de Polignac number, because 1849430025 - 2¹⁷ = 1849298953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1849430029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 30318495 + ... + 30318555.

Almost surely, 2^1849430025 is an apocalyptic number.

1849430025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1849430025 is the 43005-th square number.

1849430025 is the 21503-rd centered octagonal number.

It is an amenable number.

1849430025 is a deficient number, since it is larger than the sum of its proper divisors (1591477068).

1849430025 is an equidigital number, since it uses as much as digits as its factorization.

1849430025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The cubic root of 1849430025 is about 1227.4749408290.

Multiplying 1849430025 by its sum of digits (36), we get a square (66579480900 = 258030²).

The spelling of 1849430025 in words is "one billion, eight hundred forty-nine million, four hundred thirty thousand, twenty-five".