1653044140 has 24 divisors (see below), whose sum is σ = 3786974352. Its totient is φ = 601106880.

The previous prime is 1653044131. The next prime is 1653044171. The reversal of 1653044140 is 414403561.

It is a junction number, because it is equal to n+sod(n) for n = 1653044099 and 1653044108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3756699 + ... + 3757138.

It is an arithmetic number, because the mean of its divisors is an integer number (157790598).

Almost surely, 2^1653044140 is an apocalyptic number.

1653044140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1653044140 is an abundant number, since it is smaller than the sum of its proper divisors (2133930212).

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

1653044140 is a wasteful number, since it uses less digits than its factorization.

1653044140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7513857 (or 7513855 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1653044140 is about 40657.6455294696. The cubic root of 1653044140 is about 1182.3920021991.

The spelling of 1653044140 in words is "one billion, six hundred fifty-three million, forty-four thousand, one hundred forty".