18920820002 has 8 divisors (see below), whose sum is σ = 32435691456. Its totient is φ = 8108922852.

The previous prime is 18920819993. The next prime is 18920820031. The reversal of 18920820002 is 20002802981.

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, 675743558 + ... + 675743585.

It is an arithmetic number, because the mean of its divisors is an integer number (4054461432).

Almost surely, 2^18920820002 is an apocalyptic number.

18920820002 is a deficient number, since it is larger than the sum of its proper divisors (13514871454).

18920820002 is a wasteful number, since it uses less digits than its factorization.

18920820002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351487152.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 18920820002 in words is "eighteen billion, nine hundred twenty million, eight hundred twenty thousand, two".