1684139129642 has 32 divisors (see below), whose sum is σ = 2683016918784. Its totient is φ = 790106905600.

The previous prime is 1684139129611. The next prime is 1684139129689. The reversal of 1684139129642 is 2469219314861.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19901873 + ... + 19986315.

It is an arithmetic number, because the mean of its divisors is an integer number (83844278712).

Almost surely, 2^{1684139129642} is an apocalyptic number.

1684139129642 is a deficient number, since it is larger than the sum of its proper divisors (998877789142).

1684139129642 is a wasteful number, since it uses less digits than its factorization.

1684139129642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86254.

The product of its digits is 4478976, while the sum is 56.

The spelling of 1684139129642 in words is "one trillion, six hundred eighty-four billion, one hundred thirty-nine million, one hundred twenty-nine thousand, six hundred forty-two".