1234664523 has 6 divisors (see below), whose sum is σ = 1783404324. Its totient is φ = 823109676.

The previous prime is 1234664513. The next prime is 1234664537. The reversal of 1234664523 is 3254664321.

1234664523 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 6 + 645 + 2 + 3 = 666.

It is not a de Polignac number, because 1234664523 - 2¹⁶ = 1234598987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1234664513) 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 in 5 ways as a sum of consecutive naturals, for example, 68592465 + ... + 68592482.

It is an arithmetic number, because the mean of its divisors is an integer number (297234054).

Almost surely, 2^1234664523 is an apocalyptic number.

1234664523 is a deficient number, since it is larger than the sum of its proper divisors (548739801).

1234664523 is a wasteful number, since it uses less digits than its factorization.

1234664523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137184953 (or 137184950 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 1234664523 is about 35137.7933712406. The cubic root of 1234664523 is about 1072.7939683517.

The spelling of 1234664523 in words is "one billion, two hundred thirty-four million, six hundred sixty-four thousand, five hundred twenty-three".