18620351009 has 8 divisors (see below), whose sum is σ = 20093868480. Its totient is φ = 17152716816.

The previous prime is 18620350993. The next prime is 18620351093. The reversal of 18620351009 is 90015302681.

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

It is a cyclic number.

It is not a de Polignac number, because 18620351009 - 2⁴ = 18620350993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18620351009.

It is not an unprimeable number, because it can be changed into a prime (18620351609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464239 + ... + 1476900.

It is an arithmetic number, because the mean of its divisors is an integer number (2511733560).

Almost surely, 2^18620351009 is an apocalyptic number.

It is an amenable number.

18620351009 is a deficient number, since it is larger than the sum of its proper divisors (1473517471).

18620351009 is a wasteful number, since it uses less digits than its factorization.

18620351009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941639.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 18620351009 in words is "eighteen billion, six hundred twenty million, three hundred fifty-one thousand, nine".