18509020629 has 16 divisors (see below), whose sum is σ = 26927354880. Its totient is φ = 11215445360.

The previous prime is 18509020627. The next prime is 18509020643. The reversal of 18509020629 is 92602090581.

It is a cyclic number.

It is not a de Polignac number, because 18509020629 - 2¹ = 18509020627 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18509020627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131314 + ... + 232940.

It is an arithmetic number, because the mean of its divisors is an integer number (1682959680).

Almost surely, 2^18509020629 is an apocalyptic number.

It is an amenable number.

18509020629 is a deficient number, since it is larger than the sum of its proper divisors (8418334251).

18509020629 is a wasteful number, since it uses less digits than its factorization.

18509020629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107160.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 18509020629 in words is "eighteen billion, five hundred nine million, twenty thousand, six hundred twenty-nine".