1801982002 has 8 divisors (see below), whose sum is σ = 2845234800. Its totient is φ = 853570404.

The previous prime is 1801981999. The next prime is 1801982009. The reversal of 1801982002 is 2002891081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1801982009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23710252 + ... + 23710327.

It is an arithmetic number, because the mean of its divisors is an integer number (355654350).

Almost surely, 2^1801982002 is an apocalyptic number.

1801982002 is a deficient number, since it is larger than the sum of its proper divisors (1043252798).

1801982002 is a wasteful number, since it uses less digits than its factorization.

1801982002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47420600.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 1801982002 is about 42449.7585623287. The cubic root of 1801982002 is about 1216.8867144707.

The spelling of 1801982002 in words is "one billion, eight hundred one million, nine hundred eighty-two thousand, two".