1653612489000 has 320 divisors, whose sum is σ = 5783242093200. Its totient is φ = 440738496000.

The previous prime is 1653612488951. The next prime is 1653612489047. The reversal of 1653612489000 is 9842163561.

1653612489000 is a `hidden beast` number, since 1 + 6 + 536 + 1 + 24 + 8 + 90 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 252982844676 + 1400629644324 = 502974^2 + 1183482^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 212297106 + ... + 212304894.

Almost surely, 2^{1653612489000} is an apocalyptic number.

1653612489000 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 1653612489000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2891621046600).

1653612489000 is an abundant number, since it is smaller than the sum of its proper divisors (4129629604200).

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

1653612489000 is a wasteful number, since it uses less digits than its factorization.

1653612489000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10443 (or 10420 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1653612489000 in words is "one trillion, six hundred fifty-three billion, six hundred twelve million, four hundred eighty-nine thousand".