1653402523 has 2 divisors, whose sum is σ = 1653402524. Its totient is φ = 1653402522.

The previous prime is 1653402521. The next prime is 1653402533. The reversal of 1653402523 is 3252043561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1653402523 - 2¹ = 1653402521 is a prime.

Together with 1653402521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1653402521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826701261 + 826701262.

It is an arithmetic number, because the mean of its divisors is an integer number (826701262).

Almost surely, 2^1653402523 is an apocalyptic number.

1653402523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653402523 is an equidigital number, since it uses as much as digits as its factorization.

1653402523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1653402523 is about 40662.0526166597. The cubic root of 1653402523 is about 1182.4774442759.

The spelling of 1653402523 in words is "one billion, six hundred fifty-three million, four hundred two thousand, five hundred twenty-three".