1825967109 has 4 divisors (see below), whose sum is σ = 2434622816. Its totient is φ = 1217311404.

The previous prime is 1825967071. The next prime is 1825967119. The reversal of 1825967109 is 9017695281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1825967109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825967119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304327849 + ... + 304327854.

It is an arithmetic number, because the mean of its divisors is an integer number (608655704).

Almost surely, 2^1825967109 is an apocalyptic number.

It is an amenable number.

1825967109 is a deficient number, since it is larger than the sum of its proper divisors (608655707).

1825967109 is an equidigital number, since it uses as much as digits as its factorization.

1825967109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608655706.

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 1825967109 is about 42731.3363820979. The cubic root of 1825967109 is about 1222.2620196594.

The spelling of 1825967109 in words is "one billion, eight hundred twenty-five million, nine hundred sixty-seven thousand, one hundred nine".