123791653 has 2 divisors, whose sum is σ = 123791654. Its totient is φ = 123791652.

The previous prime is 123791651. The next prime is 123791663. The reversal of 123791653 is 356197321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 7518564 = 10783^2 + 2742^2 .

It is a cyclic number.

It is not a de Polignac number, because 123791653 - 2¹ = 123791651 is a prime.

Together with 123791651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123791651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61895826 + 61895827.

It is an arithmetic number, because the mean of its divisors is an integer number (61895827).

Almost surely, 2^123791653 is an apocalyptic number.

It is an amenable number.

123791653 is a deficient number, since it is larger than the sum of its proper divisors (1).

123791653 is an equidigital number, since it uses as much as digits as its factorization.

123791653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 123791653 is about 11126.1697362569. The cubic root of 123791653 is about 498.3836511298.

The spelling of 123791653 in words is "one hundred twenty-three million, seven hundred ninety-one thousand, six hundred fifty-three".