1803485998 has 4 divisors (see below), whose sum is σ = 2705229000. Its totient is φ = 901742998.

The previous prime is 1803485993. The next prime is 1803486007. The reversal of 1803485998 is 8995843081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803485993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450871498 + ... + 450871501.

It is an arithmetic number, because the mean of its divisors is an integer number (676307250).

Almost surely, 2^1803485998 is an apocalyptic number.

1803485998 is a deficient number, since it is larger than the sum of its proper divisors (901743002).

1803485998 is an equidigital number, since it uses as much as digits as its factorization.

1803485998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901743001.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The square root of 1803485998 is about 42467.4698798975. The cubic root of 1803485998 is about 1217.2251721253.

The spelling of 1803485998 in words is "one billion, eight hundred three million, four hundred eighty-five thousand, nine hundred ninety-eight".