1654663045 has 16 divisors (see below), whose sum is σ = 2270060928. Its totient is φ = 1134221760.

The previous prime is 1654663009. The next prime is 1654663067. The reversal of 1654663045 is 5403664561.

It is not a de Polignac number, because 1654663045 - 2⁷ = 1654662917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1654662989 and 1654663007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117850 + ... + 131140.

It is an arithmetic number, because the mean of its divisors is an integer number (141878808).

Almost surely, 2^1654663045 is an apocalyptic number.

It is an amenable number.

1654663045 is a deficient number, since it is larger than the sum of its proper divisors (615397883).

1654663045 is a wasteful number, since it uses less digits than its factorization.

1654663045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16860.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 1654663045 is about 40677.5496435073. The cubic root of 1654663045 is about 1182.7778672293. Note that the first 3 decimals are identical.

The spelling of 1654663045 in words is "one billion, six hundred fifty-four million, six hundred sixty-three thousand, forty-five".