1653051645 has 40 divisors (see below), whose sum is σ = 3386575104. Its totient is φ = 755679456.

The previous prime is 1653051643. The next prime is 1653051677. The reversal of 1653051645 is 5461503561.

1653051645 is a `hidden beast` number, since 1 + 6 + 5 + 3 + 0 + 5 + 1 + 645 = 666.

1653051645 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1653051645 - 2¹ = 1653051643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653051641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 288709 + ... + 294378.

Almost surely, 2^1653051645 is an apocalyptic number.

1653051645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1653051645 is an abundant number, since it is smaller than the sum of its proper divisors (1733523459).

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

1653051645 is an equidigital number, since it uses as much as digits as its factorization.

1653051645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583111 (or 583102 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 1653051645 is about 40657.7378244289. The cubic root of 1653051645 is about 1182.3937915924.

The spelling of 1653051645 in words is "one billion, six hundred fifty-three million, fifty-one thousand, six hundred forty-five".