1653001540 has 24 divisors (see below), whose sum is σ = 3474135000. Its totient is φ = 660661248.

The previous prime is 1653001531. The next prime is 1653001583. The reversal of 1653001540 is 451003561.

It can be written as a sum of positive squares in 4 ways, for example, as 91204 + 1652910336 = 302^2 + 40656^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8107 + ... + 58066.

It is an arithmetic number, because the mean of its divisors is an integer number (144755625).

Almost surely, 2^1653001540 is an apocalyptic number.

1653001540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1653001540 is an abundant number, since it is smaller than the sum of its proper divisors (1821133460).

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

1653001540 is a wasteful number, since it uses less digits than its factorization.

1653001540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67431 (or 67429 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1653001540 is about 40657.1216393881. The cubic root of 1653001540 is about 1182.3818451136.

The spelling of 1653001540 in words is "one billion, six hundred fifty-three million, one thousand, five hundred forty".