1653348157 has 4 divisors (see below), whose sum is σ = 1653887520. Its totient is φ = 1652808796.

The previous prime is 1653348139. The next prime is 1653348163. The reversal of 1653348157 is 7518433561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7518433561 = 53 ⋅141857237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1653348157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653348127) 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, 265057 + ... + 271222.

It is an arithmetic number, because the mean of its divisors is an integer number (413471880).

Almost surely, 2^1653348157 is an apocalyptic number.

It is an amenable number.

1653348157 is a deficient number, since it is larger than the sum of its proper divisors (539363).

1653348157 is an equidigital number, since it uses as much as digits as its factorization.

1653348157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539362.

The product of its digits is 302400, while the sum is 43.

The square root of 1653348157 is about 40661.3841008886. The cubic root of 1653348157 is about 1182.4644836745.

The spelling of 1653348157 in words is "one billion, six hundred fifty-three million, three hundred forty-eight thousand, one hundred fifty-seven".