1654416409 has 8 divisors (see below), whose sum is σ = 1699837128. Its totient is φ = 1609032960.

The previous prime is 1654416371. The next prime is 1654416419. The reversal of 1654416409 is 9046144561.

It can be written as a sum of positive squares in 4 ways, for example, as 238023184 + 1416393225 = 15428^2 + 37635^2 .

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 1654416409 - 2¹¹ = 1654414361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1654416419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97089 + ... + 112849.

It is an arithmetic number, because the mean of its divisors is an integer number (212479641).

Almost surely, 2^1654416409 is an apocalyptic number.

It is an amenable number.

1654416409 is a deficient number, since it is larger than the sum of its proper divisors (45420719).

1654416409 is a wasteful number, since it uses less digits than its factorization.

1654416409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18635.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1654416409 is about 40674.5179319928. The cubic root of 1654416409 is about 1182.7190979433.

The spelling of 1654416409 in words is "one billion, six hundred fifty-four million, four hundred sixteen thousand, four hundred nine".