654157944 has 216 divisors, whose sum is σ = 2041810680. Its totient is φ = 196305120.

The previous prime is 654157913. The next prime is 654157951. The reversal of 654157944 is 449751456.

It is a tau number, because it is divible by the number of its divisors (216).

It is a self number, because there is not a number n which added to its sum of digits gives 654157944.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6350997 + ... + 6351099.

Almost surely, 2^654157944 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 654157944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020905340).

654157944 is an abundant number, since it is smaller than the sum of its proper divisors (1387652736).

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

654157944 is a wasteful number, since it uses less digits than its factorization.

654157944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 119 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 654157944 is about 25576.5115682339. The cubic root of 654157944 is about 868.0822442545.

The spelling of 654157944 in words is "six hundred fifty-four million, one hundred fifty-seven thousand, nine hundred forty-four".