1653383923 has 4 divisors (see below), whose sum is σ = 1655043280. Its totient is φ = 1651724568.

The previous prime is 1653383863. The next prime is 1653383929. The reversal of 1653383923 is 3293833561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3293833561 = 257 ⋅12816473.

It is a cyclic number.

It is not a de Polignac number, because 1653383923 - 2²⁹ = 1116513011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1653383923.

It is not an unprimeable number, because it can be changed into a prime (1653383929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828183 + ... + 830176.

It is an arithmetic number, because the mean of its divisors is an integer number (413760820).

Almost surely, 2^1653383923 is an apocalyptic number.

1653383923 is a deficient number, since it is larger than the sum of its proper divisors (1659357).

1653383923 is an equidigital number, since it uses as much as digits as its factorization.

1653383923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659356.

The product of its digits is 349920, while the sum is 43.

The square root of 1653383923 is about 40661.8239015418. The cubic root of 1653383923 is about 1182.4730101544.

The spelling of 1653383923 in words is "one billion, six hundred fifty-three million, three hundred eighty-three thousand, nine hundred twenty-three".