1654729745 has 8 divisors (see below), whose sum is σ = 1990679784. Its totient is φ = 1320447744.

The previous prime is 1654729729. The next prime is 1654729751. The reversal of 1654729745 is 5479274561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124902976 + 1529826769 = 11176^2 + 39113^2 .

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 1654729745 - 2⁴ = 1654729729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1654729693 and 1654729702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414824 + ... + 418793.

It is an arithmetic number, because the mean of its divisors is an integer number (248834973).

Almost surely, 2^1654729745 is an apocalyptic number.

It is an amenable number.

1654729745 is a deficient number, since it is larger than the sum of its proper divisors (335950039).

1654729745 is an equidigital number, since it uses as much as digits as its factorization.

1654729745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834019.

The product of its digits is 2116800, while the sum is 50.

The square root of 1654729745 is about 40678.3694978056. The cubic root of 1654729745 is about 1182.7937597347.

The spelling of 1654729745 in words is "one billion, six hundred fifty-four million, seven hundred twenty-nine thousand, seven hundred forty-five".