1653144816 has 20 divisors (see below), whose sum is σ = 4270624232. Its totient is φ = 551048256.

The previous prime is 1653144791. The next prime is 1653144827. The reversal of 1653144816 is 6184413561.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17220211 + ... + 17220306.

Almost surely, 2^1653144816 is an apocalyptic number.

1653144816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1653144816 is an abundant number, since it is smaller than the sum of its proper divisors (2617479416).

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

1653144816 is a wasteful number, since it uses less digits than its factorization.

1653144816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440528 (or 34440522 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 1653144816 is about 40658.8836049393. The cubic root of 1653144816 is about 1182.4160056074.

The spelling of 1653144816 in words is "one billion, six hundred fifty-three million, one hundred forty-four thousand, eight hundred sixteen".