18678146929 has 8 divisors (see below), whose sum is σ = 20148074240. Its totient is φ = 17212954896.

The previous prime is 18678146923. The next prime is 18678146941. The reversal of 18678146929 is 92964187681.

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 18678146929 - 2²⁵ = 18644592497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18678146923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175619 + ... + 1191400.

It is an arithmetic number, because the mean of its divisors is an integer number (2518509280).

Almost surely, 2^18678146929 is an apocalyptic number.

It is an amenable number.

18678146929 is a deficient number, since it is larger than the sum of its proper divisors (1469927311).

18678146929 is a wasteful number, since it uses less digits than its factorization.

18678146929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367639.

The product of its digits is 10450944, while the sum is 61.

The spelling of 18678146929 in words is "eighteen billion, six hundred seventy-eight million, one hundred forty-six thousand, nine hundred twenty-nine".