1654044545 has 4 divisors (see below), whose sum is σ = 1984853460. Its totient is φ = 1323235632.

The previous prime is 1654044521. The next prime is 1654044583. The reversal of 1654044545 is 5454404561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5454404561 = 431 ⋅12655231.

It can be written as a sum of positive squares in 2 ways, for example, as 1113156496 + 540888049 = 33364^2 + 23257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654044545 - 2¹⁴ = 1654028161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1654044499 and 1654044508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165404450 + ... + 165404459.

It is an arithmetic number, because the mean of its divisors is an integer number (496213365).

Almost surely, 2^1654044545 is an apocalyptic number.

It is an amenable number.

1654044545 is a deficient number, since it is larger than the sum of its proper divisors (330808915).

1654044545 is an equidigital number, since it uses as much as digits as its factorization.

1654044545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330808914.

The product of its (nonzero) digits is 192000, while the sum is 38.

The square root of 1654044545 is about 40669.9464592714. The cubic root of 1654044545 is about 1182.6304778498.

The spelling of 1654044545 in words is "one billion, six hundred fifty-four million, forty-four thousand, five hundred forty-five".