1731444145146 has 12 divisors (see below), whose sum is σ = 3751462314522. Its totient is φ = 577148048376.

The previous prime is 1731444145121. The next prime is 1731444145147. The reversal of 1731444145146 is 6415414441371.

It is a happy number.

1731444145146 is a `hidden beast` number, since 1 + 7 + 3 + 144 + 414 + 51 + 46 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1686504809025 + 44939336121 = 1298655^2 + 211989^2 .

It is a super-2 number, since 2×1731444145146² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1731444145147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48095670681 + ... + 48095670716.

Almost surely, 2^{1731444145146} is an apocalyptic number.

1731444145146 is an abundant number, since it is smaller than the sum of its proper divisors (2020018169376).

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

1731444145146 is a wasteful number, since it uses less digits than its factorization.

1731444145146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96191341405 (or 96191341402 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 1731444145146 in words is "one trillion, seven hundred thirty-one billion, four hundred forty-four million, one hundred forty-five thousand, one hundred forty-six".