1653653505 has 32 divisors (see below), whose sum is σ = 3182976000. Its totient is φ = 716167872.

The previous prime is 1653653503. The next prime is 1653653531. The reversal of 1653653505 is 5053563561.

It is not a de Polignac number, because 1653653505 - 2¹ = 1653653503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1653653501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412455 + ... + 416444.

It is an arithmetic number, because the mean of its divisors is an integer number (99468000).

Almost surely, 2^1653653505 is an apocalyptic number.

1653653505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1653653505 is a deficient number, since it is larger than the sum of its proper divisors (1529322495).

1653653505 is a wasteful number, since it uses less digits than its factorization.

1653653505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828933.

The product of its (nonzero) digits is 202500, while the sum is 39.

The square root of 1653653505 is about 40665.1386939723. The cubic root of 1653653505 is about 1182.5372735339.

The spelling of 1653653505 in words is "one billion, six hundred fifty-three million, six hundred fifty-three thousand, five hundred five".