19181820011002 has 8 divisors (see below), whose sum is σ = 31388432745312. Its totient is φ = 8719009095900.

The previous prime is 19181820010973. The next prime is 19181820011041. The reversal of 19181820011002 is 20011002818191.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435950454774 + ... + 435950454817.

It is an arithmetic number, because the mean of its divisors is an integer number (3923554093164).

Almost surely, 2^{19181820011002} is an apocalyptic number.

19181820011002 is a deficient number, since it is larger than the sum of its proper divisors (12206612734310).

19181820011002 is a wasteful number, since it uses less digits than its factorization.

19181820011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871900909604.

The product of its (nonzero) digits is 2304, while the sum is 34.

Adding to 19181820011002 its reverse (20011002818191), we get a palindrome (39192822829193).

The spelling of 19181820011002 in words is "nineteen trillion, one hundred eighty-one billion, eight hundred twenty million, eleven thousand, two".