1684872014154 has 144 divisors (see below), whose sum is σ = 4088361773664. Its totient is φ = 461501087040.

The previous prime is 1684872014117. The next prime is 1684872014207. The reversal of 1684872014154 is 4514102784861.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1684872014097 and 1684872014106.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 30203272 + ... + 30259004.

It is an arithmetic number, because the mean of its divisors is an integer number (28391401206).

Almost surely, 2^{1684872014154} is an apocalyptic number.

1684872014154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1684872014154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044180886832).

1684872014154 is an abundant number, since it is smaller than the sum of its proper divisors (2403489759510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1684872014154 is a wasteful number, since it uses less digits than its factorization.

1684872014154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55921 (or 55883 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 1684872014154 in words is "one trillion, six hundred eighty-four billion, eight hundred seventy-two million, fourteen thousand, one hundred fifty-four".