1654845620 has 48 divisors (see below), whose sum is σ = 3688312320. Its totient is φ = 621525504.

The previous prime is 1654845611. The next prime is 1654845691. The reversal of 1654845620 is 265484561.

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, 143717 + ... + 154803.

It is an arithmetic number, because the mean of its divisors is an integer number (76839840).

Almost surely, 2^1654845620 is an apocalyptic number.

1654845620 is a gapful number since it is divisible by the number (10) 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 1654845620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1844156160).

1654845620 is an abundant number, since it is smaller than the sum of its proper divisors (2033466700).

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

1654845620 is a wasteful number, since it uses less digits than its factorization.

1654845620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11552 (or 11550 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 1654845620 is about 40679.7937556227. The cubic root of 1654845620 is about 1182.8213680754.

The spelling of 1654845620 in words is "one billion, six hundred fifty-four million, eight hundred forty-five thousand, six hundred twenty".