1648137523 has 2 divisors, whose sum is σ = 1648137524. Its totient is φ = 1648137522.

The previous prime is 1648137521. The next prime is 1648137527. The reversal of 1648137523 is 3257318461.

It is a weak prime.

It is an emirp because it is prime and its reverse (3257318461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1648137523 - 2¹ = 1648137521 is a prime.

Together with 1648137521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1648137521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824068761 + 824068762.

It is an arithmetic number, because the mean of its divisors is an integer number (824068762).

Almost surely, 2^1648137523 is an apocalyptic number.

1648137523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648137523 is an equidigital number, since it uses as much as digits as its factorization.

1648137523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 1648137523 is about 40597.2600430128. The cubic root of 1648137523 is about 1181.2209719059.

The spelling of 1648137523 in words is "one billion, six hundred forty-eight million, one hundred thirty-seven thousand, five hundred twenty-three".