1803981425 has 24 divisors (see below), whose sum is σ = 2345415360. Its totient is φ = 1373803200.

The previous prime is 1803981397. The next prime is 1803981461. The reversal of 1803981425 is 5241893081.

It is a de Polignac number, because none of the positive numbers 2^k-1803981425 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113891 + ... + 128759.

It is an arithmetic number, because the mean of its divisors is an integer number (97725640).

Almost surely, 2^1803981425 is an apocalyptic number.

It is an amenable number.

1803981425 is a deficient number, since it is larger than the sum of its proper divisors (541433935).

1803981425 is a wasteful number, since it uses less digits than its factorization.

1803981425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15113 (or 15108 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 1803981425 is about 42473.3024969804. The cubic root of 1803981425 is about 1217.3366212863.

The spelling of 1803981425 in words is "one billion, eight hundred three million, nine hundred eighty-one thousand, four hundred twenty-five".