1825493965 has 4 divisors (see below), whose sum is σ = 2190592764. Its totient is φ = 1460395168.

The previous prime is 1825493953. The next prime is 1825494019. The reversal of 1825493965 is 5693945281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5693945281 = 37 ⋅153890413.

It can be written as a sum of positive squares in 2 ways, for example, as 343397961 + 1482096004 = 18531^2 + 38498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825493965 - 2⁵ = 1825493933 is a prime.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 182549392 + ... + 182549401.

It is an arithmetic number, because the mean of its divisors is an integer number (547648191).

Almost surely, 2^1825493965 is an apocalyptic number.

It is an amenable number.

1825493965 is a deficient number, since it is larger than the sum of its proper divisors (365098799).

1825493965 is an equidigital number, since it uses as much as digits as its factorization.

1825493965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365098798.

The product of its digits is 2332800, while the sum is 52.

The square root of 1825493965 is about 42725.7997584598. The cubic root of 1825493965 is about 1222.1564398281.

The spelling of 1825493965 in words is "one billion, eight hundred twenty-five million, four hundred ninety-three thousand, nine hundred sixty-five".