1654444044 has 72 divisors (see below), whose sum is σ = 4569207552. Its totient is φ = 500582880.

The previous prime is 1654444031. The next prime is 1654444061. The reversal of 1654444044 is 4404444561.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 291417 + ... + 297039.

It is an arithmetic number, because the mean of its divisors is an integer number (63461216).

Almost surely, 2^1654444044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1654444044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284603776).

1654444044 is an abundant number, since it is smaller than the sum of its proper divisors (2914763508).

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

1654444044 is a wasteful number, since it uses less digits than its factorization.

1654444044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387 (or 6382 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

The square root of 1654444044 is about 40674.8576395788. The cubic root of 1654444044 is about 1182.7256831980.

The spelling of 1654444044 in words is "one billion, six hundred fifty-four million, four hundred forty-four thousand, forty-four".