1654403616 has 120 divisors (see below), whose sum is σ = 5077283904. Its totient is φ = 527472000.

The previous prime is 1654403581. The next prime is 1654403617. The reversal of 1654403616 is 6163044561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1654403617) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 45741 + ... + 73491.

Almost surely, 2^1654403616 is an apocalyptic number.

1654403616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1654403616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538641952).

1654403616 is an abundant number, since it is smaller than the sum of its proper divisors (3422880288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1654403616 is a wasteful number, since it uses less digits than its factorization.

1654403616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27796 (or 27779 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1654403616 is about 40674.3606710665. The cubic root of 1654403616 is about 1182.7160494234.

The spelling of 1654403616 in words is "one billion, six hundred fifty-four million, four hundred three thousand, six hundred sixteen".