18130429639 has 16 divisors (see below), whose sum is σ = 21398972416. Its totient is φ = 15031980000.

The previous prime is 18130429631. The next prime is 18130429643. The reversal of 18130429639 is 93692403181.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18130429639 - 2³ = 18130429631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130429631) 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, 469909 + ... + 507025.

It is an arithmetic number, because the mean of its divisors is an integer number (1337435776).

Almost surely, 2^18130429639 is an apocalyptic number.

18130429639 is a deficient number, since it is larger than the sum of its proper divisors (3268542777).

18130429639 is a wasteful number, since it uses less digits than its factorization.

18130429639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39406.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 18130429639 in words is "eighteen billion, one hundred thirty million, four hundred twenty-nine thousand, six hundred thirty-nine".