1945545829 has 8 divisors (see below), whose sum is σ = 1953706392. Its totient is φ = 1937402880.

The previous prime is 1945545761. The next prime is 1945545851. The reversal of 1945545829 is 9285455491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 303108100 + 1642437729 = 17410^2 + 40527^2 .

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 1945545829 - 2¹¹ = 1945543781 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 (1945545859) 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, 245757 + ... + 253549.

It is an arithmetic number, because the mean of its divisors is an integer number (244213299).

Almost surely, 2^1945545829 is an apocalyptic number.

It is an amenable number.

1945545829 is a deficient number, since it is larger than the sum of its proper divisors (8160563).

1945545829 is an equidigital number, since it uses as much as digits as its factorization.

1945545829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807.

The product of its digits is 2592000, while the sum is 52.

The square root of 1945545829 is about 44108.3419434465. The cubic root of 1945545829 is about 1248.3810141999.

The spelling of 1945545829 in words is "one billion, nine hundred forty-five million, five hundred forty-five thousand, eight hundred twenty-nine".