1653398244 has 81 divisors (see below), whose sum is σ = 4357309411. Its totient is φ = 548937000.

The previous prime is 1653398239. The next prime is 1653398273. The reversal of 1653398244 is 4428933561.

The square root of 1653398244 is 40662.

It is a perfect power (a square), and thus also a powerful number.

1653398244 is a `hidden beast` number, since 1 + 6 + 533 + 98 + 24 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (81).

It is a Duffinian number.

Its product of digits (622080) is a multiple of the sum of its prime divisors (256).

It is a self number, because there is not a number n which added to its sum of digits gives 1653398244.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6587119 + ... + 6587369.

Almost surely, 2^1653398244 is an apocalyptic number.

1653398244 is the 40662-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653398244

1653398244 is an abundant number, since it is smaller than the sum of its proper divisors (2703911167).

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

1653398244 is an frugal number, since it uses more digits than its factorization.

1653398244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 256 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The cubic root of 1653398244 is about 1182.4764241925.

The spelling of 1653398244 in words is "one billion, six hundred fifty-three million, three hundred ninety-eight thousand, two hundred forty-four".